How to Write a 4th Grade Science Fair Report

Ashley seehorn.

Science fair projects require a report for clarification of research and procedures.

The purpose of a science fair project report is to explain the research behind the project, as well as the processes used to complete the project itself. The project report clarifies important points that may not be clear from an oral or visual presentation of the processes involved. Be sure to read over any guidelines provided by the science teacher before beginning. Start by writing the body of the paper; and then add the abstract, table of contents, and title page. It is easier to complete these elements after completing the rest of the report. (See Reference 1)

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things needed

1 Writing the Body of the Report

2 open a blank document in ms word.

Open a blank document in MS Word. Set the desired font.

3 Press Enter ” five times

Press “Enter” five times. Click on “Insert” in the Word toolbar. Click “Page Break” to create a new page. This will leave space for the title page, abstract, and table of contents.

4 Heading Hypothesis

Type the heading “Hypothesis” or “Research Question.” Press “Enter” twice.

5 Thought was going to happen in the experiment

Type the original hypothesis or what you thought was going to happen in the experiment.

6 Heading Background Information

Type the heading “Background Information.” Press “Enter” twice.

7 Type three

Type three to five paragraphs explaining the research related to your project.

8 Heading Materials

Type the heading “Materials.” Press “Enter” twice. List the materials used in your experiment.

9 Heading Procedures

Type the heading “Procedures.” Press “Enter” twice. List the procedures you followed to complete your experiment. Note the constants and variables involved in the experiment.

10 Heading Results

Type the heading “Results.” Press “Enter” twice. List all the results of your experiment. Include data, graphs, pictures, and observations.

11 Heading Conclusions

Type the heading “Conclusions.” Press “Enter” twice. Explain whether or not the experiment confirmed or refuted your hypothesis. Be specific about which elements of the data reflect the conclusions.

12 Heading Ideas

Type the heading “Ideas for Future Research.” Press “Enter” twice. Describe why your research was important, and how it impacts society. Explain how your research could be expanded in the future.

13 End of the Report

Click on “Insert” in the toolbar. Click “Page Break” to create a new page.

15 Heading Acknowledgments

Type the heading “Acknowledgments.” Press “Enter” twice.

16 List the names

List the names of anyone who assisted you with your project: your parents, siblings, teacher, classmates, or others.

17 Heading Bibliography

Type the heading “Bibliography.” Press “Enter” twice.

18 Used in your research

List all the references used in your research. Be sure to follow the citation format if one is provided by the teacher, otherwise use the examples in the Resources section of this article.

19 Title Page, Abstract, & Table of Contents

20 move the mouse cursor.

Move the mouse cursor to the top of the first page of the report. Press “CTRL” and “E” to center the text. Press “Enter” several times to move to the middle of the page.

21 Type your project title

Type your project title, your name, grade, teacher’s name, and date. Press “Enter” twice between each item to leave a blank space. Click on “Insert” in the toolbar. Click “Page Break” to create a new page.

22 Heading Abstract

Type the heading “Abstract.” Press “Enter” twice. Write a short summary of your project. The abstract should be no more than one or two paragraphs.

23 Click on Insert in the Word toolbar on Insert in the Word toolbar

Click on “Insert” in the Word toolbar. Click “Page Break” to create a new page. Click “Page Number” and choose the position you desire for your page numbers.

24 Heading Table

Type the heading “Table of Contents” and create a Table of Contents for your project.

About the Author

Ashley Seehorn has been writing professionally since 2009. Her work has been featured on a variety of websites including: eHow, Answerbag and Opposing Views Cultures. She has been a teacher for 20 years and has taught all ages from preschool through college. She is currently working as a Special Education Teacher.

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science fair project report sample 4th grade

science fair project report sample 4th grade

Science Fair Project Final Report

At this point, you are in the home stretch. Except for writing the abstract , preparing your science fair project final report will just entail pulling together the information you have already collected into one large document.

Here is a sample science fair project final report . Note: The author's teacher did not require source citations and required a different format for the bibliography. Science Buddies staff added references and reformatted the bibliography at a later date; consequently, the page and volume references are fictitious for some of the sources.

Science Fair Project Final Report Checklist

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Teaching Expertise

40 Clever 4th Grade Science Projects That Will Blow Your Mind

4th grade science projects

April 21, 2021 //  by  Lauren Du Plessis

Our list of unique science projects is a sure winner when sourcing ideas that are appropriate to the 4th grade learner. Science is a vital component of STEM-based activities and our top 30 project ideas are sure to increase creativity, develop critical thinking abilities as well as effective communication and collaboration skills.

1. Flashlight Creation


Discover simple electric circuit rules when creating this nifty paper flashlight! This project is the perfect experiment for kids as it's sure to highlight the science behind batteries.

Learn more: Flashlight Creation

2. Lemon Volcano


Have a blast creating this erupting lemon volcano! By using average household supplies, 4th graders discover the properties of both acids and bases and learn how the interaction between them causes a chemical reaction.

Learn more: Lemon Volcano

3. Earthquake Simulation


Set a dish of jelly and then go about building a structure on it. Upon completion of the structure, wobble the dish so that the jelly shakes and disrupts the structure- in turn demonstrating the science of seismology.

Learn more: Earthquake Simulation

4. Design a Hovercraft


Time after time, this proves to be one of the best experiments for demonstrating the power of the air. Unveil properties of friction and air pressure as you design a floating hovercraft!

Learn more: Design a Hovercraft

5. Make a Microscope 


A cause for STEM excitement! This wonderful project demonstrates how water droplets curve to create a convex lens and in turn, refract light and magnify objects.

Learn more: Make a Microscope

6. How Chameleons Change Color

Create a mesmerizing color show as an interactive poster that demonstrates how chameleons change color ass the middle wheel spins.

Learn more: How Chameleons Change Color

7. How Your Body is Similar to a Car

Screenshot 2022-05-10 172245

Just as we source our energy from food, cars source theirs from gasoline. Further, demonstrate how energy is stored and released with the help of simple materials such as rubber bands.

Learn more: How Your Body is Similar to a Car

8. Discover Newton's Law


With the aid of a string of beads, highlight Newton's Law of Gravity as the beads are tugged ever so slightly and then begin to fall from the cup.

Learn more: Discover Newton's Law

9. Egg Drop


Students are encouraged to source material from home that they will use to create a protective barrier for their egg before dropping it to measure the effectiveness of their contraption in preventing their egg from cracking.

Learn more: Egg Drop

10. Static Electricity Science


Discover the science of static electricity in a fun way by building an electroscope to demonstrate the forces of attraction and repulsion!

Learn more: Static Electricity Science

11. Demonstrate Water Erosion


This hands-on, ocean science project is perfect for teaching students about coastal erosion and requires the use of simple materials such as a dish, sand, plastic bottle, stones, and water.

Learn more: Demonstrate Water Erosion

12. Milk Plastic


This unique experiment can lead to hours of crafting fun as 4th grade students learn how to create plastic from milk!

Learn more: Milk Plastic

13. Salt Water Density Experiment


The properties of water and density are highlighted in this science project as children discover that saltwater is denser than normal water.

Learn more: Salt Water Density Experiment

14. Make Unstoppable Bubbles


By combining the traditional soapy bubble mixture with glycerin, students learn about how the original mixture evaporates from stronger bubbles.

Learn more: Make Unpoppable Bubbles

15. Discover More about Blood Components


Biology is an important component of life but should be approached in a fun and simplified manner when working with 4th graders. Discover more about blood components by crafting "blood" model jars!

Learn more: Discover More about Blood Components

16. Could Dominoes knock a Building Over


Discover the effects of chain reactions with the help of this easy science fair project idea before posing the question of whether or not dominos could knock down a building!

Learn more: Could Dominos Knock a Building Over

17. How Neon Signs Work


By making use of a small gas tube in this cool experiment, 4th graders will be intrigued to learn about how neon signs work.

Learn more: How Neon Signs Work

18. Anemometer


Discover wind speed with the help of your very own anemometer! Simple earth science is unveiled with the help of a simple garden contraption made from paper cups, straws, tape, a pencil, and a thumbtack.

Learn more: Anemometer

19. Make Recycled Paper


Although making recycled paper can at times be a process, it is extremely satisfying! Students watch how water is first absorbed by their shredded paper and then, towards the end of the process, how it is drained away- leaving a recycled piece of paper in its place.

Learn more: Make Recycled Paper

20. Nonrenewable Resources


What better way to highlight the depletion of non-renewable resources, than by making use of noodle- mining in a competitive game or project! This hands-on activity is perfect for elementary-age students to use as an earth science project.

Learn more: Nonrenewable Resources

21. Balloon Rocket


This simple, yet fun, activity depicts Newton's law of motion perfectly. By using household materials students discover that for every action, there is an equal or opposite reaction.

Learn more: Balloon Rocket

22. Cloud Science


With the help of this exciting cloud science project, your 4th grad students will grasp the concept of the water cycle in no time! With the help of a paper cup, plastic zip-top bag, tape, and water students discover how water moves from the ground into the air, then forming clouds before falling back to earth as rain.

Learn more: Cloud Science

23. Blow up a Balloon with Vinegar and Baking Soda


Intrigue 4th grade science students with this experiment that sees balloons magically inflate when baking soda and vinegar combine and generate carbon dioxide.

Learn more: Blow up a Balloon with Vinegar and Baking Soda

24. Cellphone Projector


Not only is this a great science project, but most of the materials used are recycled materials. This simple project is perfect for teaching complex rules such as the refraction of light.

Learn more: Cellphone Projector

25. Create a working elevator 


Students are encouraged to make use of various materials in order to create a working elevator that has a crank and is able to bear a load.

Learn more: Create a Working Elevator

26. Ocean current simulator 


By making use of water, food coloring, an empty dish, and plastic sea creatures, students learn how ocean currents are formed in this simple science project.

Learn more: Ocean Current Simulator

27. Bacteria grower


A simple Agar solution, that has been set in various Petri dishes, is the perfect breeding ground for bacteria. Swab items that the students use on a daily basis and wipe the swab's on the dishes, then leaving them covered in order to grow and visually depict that bacteria are hiding all around us.

Learn more: Bacteria Grower

28. Wiggle Bot

Craft your very own Wigglebot! Using simple tools and supplies, 4th graders have the opportunity to work with potential energy in a fun manner!

Learn more: Wiggle Bot

29. Crystal names


Make science fun as students grow an edible, crystalized version of their names on pipe cleaners ! This is just one of the many edible science projects out there for kids so be sure to get creative and see what you can make!

Learn more: Crystal Names

30. Capillary Action


Teach the concept of capillary action with this spectacular rainbow glass display! This is a fantastic opportunity for students to learn about color mixing and how water travels.

Learn more: Capillary Action

31. Design a Working Lung Model


Explore more about the natural phenomenon of breath with this cool project. Design a working lung model using a plastic bottle, straws, balloons, sticky tape, and scissors.

Learn more: Kiwi Co

32. Make It Glow


Discover which water mixture will glow using black light to test regular water with highlighter dye, tonic water, and tap water.

Learn more: Cool Science Experiments HQ

33. Explore Tooth Decay


Learn about tooth decay using eggs and an assortment of drinks such as sugar water, soda, and milk. This project is wonderful for visually illustrating the effects of sugar products on teeth.

Learn more: Sciencing

34. Build a Hygrometer


Measure humidity with the help of your very own hygrometer made from a piece of wood and plastic, nails, a dime, glue, tape, a hammer, and a pair of scissors.

Learn more: We Have Kids

35. Discover Osmosis


Learn about osmosis with the help of this fun and colorful gummy bear science project!

Learn more: Homeschool

36. Rotting foods 


This experiment helps to develop thorough observation skills. Reveal which, out of an assortment of foods, will be the first to rot and discover what accelerates the process.

Learn more: No Time for Flash Cards

37. Create a Sundial


Turn back time as you craft an old-fashioned mechanism that helped ancient civilizations such as the Egyptians, Mayans, and Babylonians tell the time.

Learn more: Explorable

38. Make a fossil


Learn how fossils are formed as you leave your mark in a plaster of Paris cast. Consider casting an imprint using a toy to make this activity even more fun!

Learn more: YouTube

39. Build a Rubber Band Guitar


Explore the science of sound as you build a rubber band guitar using a heap of rubber bands and other simple materials.

Learn more:

40. Make a Water Microscope


Make a microscope to allow you to examine certain objects in greater detail. You'll need a piece of fuse wire, water and an assortment of objects to look analyze.

Learn more: Science Kids

The activities we've provided are perfectly adaptable and may be employed in individual, pair, or group settings. Be inspired to design creative classes with the help of our comprehensive list of science projects above. We strive to make learning fun whilst still highlighting the key concepts of science in a simplified manner.

Frequently Asked Questions

Why is science important for 4th graders.

Science-based learning at an elementary level introduces students to a STEM-based classroom focus and opens them up to STEM-related careers at a young age. Students discover key concepts about the world around them- unveiling properties of water, electrical currents, animals, ocean currents and so much more along the way!

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Engineering kits for high school


Is your 4th grader getting ready for his/her first science fair? Fear not, we have rounded up a list of 25 great fourth grade science fair ideas to get you started! Remember, the whole point of a science fair is for your child to learn about science in a hands-on way, so resist the temptation to “help” too much. Plus we’ve deliberately chosen easy projects that your fourth grader should be able to do with minimal supervision or help from an adult.

In this post, we’ve assembled 25 easy science fair project ideas for 4th grade. We link each project description to its original source, where you can get more information and step-by-step instructions.


Volcano Science

Learn all about volcanoes, then make one of your own!

Recommended for Grades 4.



When life gives you lemons, make a battery!

Lemon Power is a fascinating experiment that you can attempt to duplicate with other fruit. Which fruit makes the best battery? Experiment and find out!

Recommended for Grades 4-5.



A Science Fair Project on Tooth Decay by Jennifer Elrod

Doing an experiment on tooth decay is both beneficial and interesting. It only requires a few inexpensive materials and a week’s worth of observation and record keeping. The experiment requires no work after the initial setup.



Homemade Lava Lamp by Alexa Bach McElrone

This project takes about 2 hours to complete the experiment and the write-up. Kids will get to explore the relationship between oil and water in terms of density as well as hydrophilic/hydrophobic compounds.



How the Amount of Light Affects Germination and Growth.

The goal of the project is to find out how different lighting conditions affect seeds germination and growth. This article will give you the step by step procedure for this project.


Growing Bacteria in Petri Dishes by Steve Spangler

A Petri dish prepared with nutrient agar (a seaweed derivative with beef nutrients) is an ideal food source for the bacteria you’ll be growing. Collect samples from around the house or classroom and record the results for the one with the most bacteria.


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Bridge Project by Sarah Benton

This project explores the basic physics of bridges. The goal is that the student will develop an understanding through experimentation of which shapes are the most structurally strong, and that many factors are taken into account in engineering and building.



Paper Airplane Science Fair Project

Create your own hypothesis about paper airplanes, then start your experiment. This article gives you all of the information you need.



Barometer Science Project

Make your own barometer and then use it to test weather conditions on a dry day, a rainy day, a cloudy day, etc.



How Do Antacids Work?

In this activity, learners explore the chemical reaction between water and effervescent antacid tablets. This hands-on activity models how a material can act differently when it’s nanometer-sized. Learners compare the reaction rate of an effervescent antacid tablet that is broken in half with one that is broken into many pieces.



Gummy Bear Osmosis

Do Gummy Bears dissolve in water? In vinegar? In liquid soap? Test your hypothesis on a variety of liquids and find out.


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Is Your Dog’s Mouth Cleaner than Your Mouth?

Is it a myth or fact that a dog’s mouth has less germs that a human’s mouth? Follow these simply instructions and test for yourself.


Does Mint Actually Cool Things Down? By Jennifer Penn-Chiu

Mint-flavored gum, breath fresheners, and hard candies often advertise that mint has a cooling effect, and use images of frost and ice to demonstrate this sensation. But is this sensation a result of the mint actually lowering temperatures?


Which Food Will Rot First?

This example tests the rotting of 4 different foods, but your scientist can test as many different types of food as they can imagine.



Helmet Crash Test by Steve Spangler

Not only will your little scientist gain a better appreciation for using a helmet, she can also learn more about the science behind it. Try testing different size melons and different height drops.



Can Magnets Affect the Growth Process of Radish?

In this experiment, your scientist will determine whether magnets make radish plants grow faster or slower.



Playground Teeter-Totter

The goal of this project is to create a compound machine using pulleys and levers that would be able to lift a Barbie doll up and down by pulling a string by the player. A common problem on the playground is that you sometimes can’t find another person to go on the teeter totter with you.

Recommended for Grades 4-6.



Growing a “Mold Garden”

The goal of this project is to grow different mold species on different kind of substrates to find out if the same bread mold species will grow on all of them. Do all mold species have the same taste and preferences?!

Recommended for Grades 4-5



Making a Simple Sundial and Testing Its Accuracy

Learn how to make a sundial and then test its accuracy with a series of experiments.

Recommended for Grades 4-6



A Pint Pot Planet

This experiment will demonstrate the water cycle and test different hypotheses on rainfall and the water cycle.



Build and Test a Paper Bridge

This project helps you discover how to create a strong bridge using just paper. Instructions also offer some additional parameters to add into the experiment.

Recommended for grades 4-5


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Paper Airplane Experiment

Experiment to find the best design for a paper airplane

Source: ScienceFairMath


Use the Energy in a Peanut to Heat Water

Just about everything has potential energy stored in it. The problem is releasing that energy to be able to do some work.

A tiny peanut contains stored chemical energy. When we eat them, the stored energy is converted by our bodies so we can do work. We can also use the energy in a peanut to heat a container of water.

Recommended for grades 4-6



Oil Spill Experiment

This experiment will demonstrate the detrimental effects of oil spills to marine life


Make Your Own Microscope with Water

Make a simple microscope using water and take a closer look at the world around you.

The lens you create with water works like a microscope or magnifying glass, allowing you to see objects in much greater detail than if you were just looking with the naked eye.


Ideas, Inspiration, and Giveaways for Teachers

We Are Teachers

50 Exciting Hands-On Fourth Grade Science Experiments, Activities, and Projects

Did you know you can make plastic from milk?

4th grade science projects including creating a groovy blue lava lamp out of a water bottle and building a wigglebot out of a red plastic cup.

Nothing gets kids more excited for science than hands-on experiments! Watch your fourth grade science students’ eyes light up when they try some of these activities. You’ll find physics, biology, engineering, chemistry, and more. These projects are easy to set up and really help drive the learning home. Get ready for some science fun!

(Just a heads up, WeAreTeachers may collect a share of sales from the links on this page. We only recommend items our team loves!)

1. Flick marbles to learn transfer of energy

Fourth grade science student flicking a marble along the ridge in a ruler

This experiment is a bit of a thinker: What will happen when one moving marble hits several stationary marbles sitting in a row? Flick the first marble and find out!

Learn more: Frugal Fun for Boys and Girls/Marble Energy Transfer

2. Measure a magnet’s attraction force

Small magnet, paper clip, ruler, and instruction card

Fourth grade science students already know that magnets attract metal objects. In this experiment, they’ll measure to see how close a magnet needs to be to an object for the attraction to work. Mix things up with different sizes of magnets and objects of various weights.

Learn more: Ashleigh’s Education Journey

3. See light refraction in action

Student dipping a drawing into a glass of water, using light refraction to make the color disappear

This seems more like a magic trick, but we promise it’s science! Make colors seem to appear and disappear, change numbers into letters, and more.

Learn more: Ronyes Tech

4. “Draw” on water with dry-erase marker

Student pouring water onto a clear glass plate with rainbows drawn on it with dry erase marker

This is another one of those mind-blowing science demos that kids will want to try over and over again. Draw on a shallow bowl or plate with dry-erase markers , then slowly add water. The marker (which is insoluble in water) will float to the top!

Learn more: Active Littles

5. Paint with sunscreen

Sun painted onto a piece of black construction paper using sunscreen

Prove that sunscreen really does provide protection from harmful UV rays. Turn this into a full-blown experiment by trying different SPFs or comparing it to other creams or lotions without SPF.

Learn more: Team Cartwright

6. Blow unpoppable bubbles

Student's gloved hand holding a soap bubble next to a window (Fourth Grade Science)

A soap bubble you can hold in your hand? It’s true! A little glycerin makes the soap bubble layers stronger, so you can even toss them gently from person to person.

Learn more: Learning Resources

7. Grow crystal names

Crystalized pipe cleaner letters A, k, e, and m

No list of fourth grade science experiments would be complete without crystals! Kids of all ages love growing crystals, making this an ideal way to learn about supersaturated solutions. The classic experiment gets a new twist when you have kids shape pipe cleaners into their own names first.

Learn more: Playdough to Plato

8. Engineer a drinking-straw roller coaster

Student building a roller coaster of drinking straws for a ping pong ball (Fourth Grade Science)

STEM challenges are always a hit with kids. We love this one, which only requires basic supplies like drinking straws . ( Get more fourth grade STEM challenges here. )

Learn more: Frugal Fun for Boys and Girls

9. Make a wigglebot

Plastic cup turned into a simple wiggling robot with markers for feet (Fourth Grade Science)

Who knew electricity could be so adorable? Explore the science behind batteries and motors by creating a simple “wigglebot.” Experiment with weights to throw the motor off balance and create fun designs.

Learn more: Research Parent

10. Grow bacteria in petri dishes

Six petri dishes growing a variety of molds and bacteria

Your students will truly feel like scientists when they perform this classic experiment. They’ll prep the dishes with agar, swab different surfaces, and see what bacteria they grow. It’s gross science, but it’s also easy and impressive.

Learn more: Steve Spangler Science/Growing Bacteria

11. See coastal erosion in action

Plastic bin filled with sand, shells, and water to simulate a beach, with a hand holding a plastic bottle in the water (Fourth Grade Science)

Here’s a cool experiment to include in your unit on oceans. Build a miniature coastline, then see how wave action erodes the shore.

Learn more: Little Bins for Little Hands/Erosion

12. Construct a working flashlight

Student's hand powering a flashlight made from index card, LED, foil, and masking tape

You’ll only need a few supplies to guide your students in building their own LED flashlights. They’ll learn how electricity travels and the way circuits work. The slideshow available through the link makes this lesson a breeze for teachers too.

Learn more: Mystery Science/DIY Flashlight

13. Erupt a lemon volcano

Cut lemon in a blue bowl covered in colorful fizzy foam (Fourth Grade Science)

Early chemistry experiments with acids and bases are always a lot of fun. This one uses the natural acids of lemon juice and adds a little food coloring to up the wow factor.

Learn more: STEAM Powered Family

14. Sink and float to explore density

Series of glasses filled with liquid labeled baking soda water, sugar water, control plain water, and salt water, with red and blue objects floating in each

Ask your students if any of them have ever gone swimming in the ocean and noticed that it’s easier to keep afloat there than in a pool. Then, try this experiment to learn why that happens.

Learn more: Science Kiddo

15. Discover a density rainbow

Clear glasses filled with a rainbow of liquids, and a tube showing those liquids layered on each other (Fourth Grade Science)

Colorful, simple, and impressive: It’s the trifecta of fourth grade science experiments! Wow your students by layering colored sugar water as you learn about density, adhesion, and cohesion.

Learn more: Little Bins for Little Hands/Sugar Density Rainbow

16. Become human sundials

Fourth grade science students measuring their outlines drawn in sidewalk chalk on the playground

Choose a sunny day and grab some sidewalk chalk—your students are about to become sundials! They’ll practice measuring skills and learn about the movement of the sun across the sky.

Learn more: Rhythms of Play

17. Transform milk into plastic

Green plastic heart and yellow beads made from milk caseins

Plastic seems incredibly modern, but people have been making casein plastic from milk for centuries. In this science project, students experiment to create the formula for the best milk plastic. They’ll be amazed at the results!

Learn more: Science Buddies/Milk Plastic

18. Simulate an earthquake

Fourth grade science teacher's hand shaking a pan of Jello topped with a house model made of toothpicks and marshmallows

The ground under our feet may feel solid, but an earthquake changes that pretty quickly. Use Jell-O to simulate the earth’s crust, then see if you can build an earthquake-proof structure.

Learn more: Teaching Science

19. Mine for chocolate chips

Student's hand digging through a crumbled cookie to pull out chocolate chips (Fourth Grade Science)

If you’re learning about mineral resources, this quick hands-on activity is an interesting way to explore the effects of mining. Kids have two minutes to find as many chocolate chips as they can in a cookie. Will they smash it up and destroy it entirely? Pick them out one by one? This experiment can lead to intriguing discussions.

Learn more: Sarah’s STEM Stuff

20. Assemble an edible DNA model

Student holding a DNA model made from Twizzlers, colored marshmallows, and toothpicks

Use licorice sticks, four different colored candies or fruits, and toothpicks to build an edible strand of DNA. Learn about chemical bonds and the helix shape, then eat your creation!

Learn more: wikiHow

21. Layer an edible soil model

Clear cup layered with chocolate chip bedrock, pudding subsoil, crushed cookie topsoil, and coconut grass

Digging in the dirt is fun, but it’s even more fun when you can eat the dirt when you’re finished! Create edible soil-layer models, complete with gummy worms, for a simple earth science project. ( Find more edible science projects here. )

Learn more: Super Teacher Blog

22. Brew elephant toothpaste

Two liter bottle overflowing with pink foam (Fourth Grade Science)

OK, this isn’t really what elephants use to brush their teeth, but this big foamy exothermic reaction needs a big name! Wow your class using simple materials, including dish soap, hydrogen peroxide, and a packet of yeast.

Learn more: Science Bob

23. Test Sharpie solubility

Coffee filters colored with marker, dipped into vinegar, rubbing alcohol, and water

Find out if Sharpie markers are really permanent with this fourth grade science activity that uses the scientific method to explore solutes and solvents.

Learn more: Around the Kampfire

24. Build a hovercraft

Inflated yellow balloon attached to a CD by a bottle cap

It’s not exactly the same model the military uses, but this simple hovercraft is a lot easier to build. An old CD and a balloon help demonstrate air pressure and friction in this fun fourth grade science experiment.

Learn more: Hovercraft

25. Learn about capillary action

Glasses filled with colored water, with paper towels running from one to the next

Kids will be amazed as they watch the colored water move from glass to glass, and you’ll love the easy and inexpensive setup. Gather some water, paper towels, and food coloring to teach the scientific magic of capillary action.

Learn more: 123 Homeschool 4 Me/Capillary Rainbow

26. Find out if mood rings really work

Student's hand holding a blue mood ring in front of a thermometer

Apply the rigors of the scientific method to mood rings ! Find out what makes mood rings change color, then see if they really reflect a person’s mood.

Learn more: Rings Validity Test

27. Create a smartphone projector

Cardboard box with a magnifying glass embedded in it, with a smart phone (Fourth Grade Science)

No projector in your classroom yet? No problem! Have your students help you construct one for your smartphone using a cardboard box and large magnifying glass . They’ll learn about convex lenses and how the brain processes images too.

Learn more: The STEM Laboratory

28. Set up a pulley system

Pulley system made of cans and yarn mounted on a piece of cardboard

The science of machines never fails to fascinate kids. In this experiment, they’ll design their own pulley system to make it easier to lift an object.

Learn more: 123 Homeschool 4 Me/DIY Pulley

29. Design a working elevator

Elevator made of paper towel tubes, dowel rods, and string

Engineering activities make for amazing hands-on learning. Challenge your students to build an elevator that can safely lift a certain amount of weight.

Learn more: Teachers Are Terrific

30. Turn a penny green

Five pennies turned various shades of green (Fourth Grade Science)

Experiment with simple chemical reactions as you turn pennies green using vinegar. Don’t forget to tell them that the Statue of Liberty is green because of the very same reasons.

Learn more: Buggy and Buddy/Penny Reactions

31. Use marshmallows to explore Boyle’s law

Fourth grade science students holding large syringes filled with colorful marshmallows

Seeing Boyle’s law (which relates pressure and volume of gasses) in action makes it a little easier to understand and remember. This simple fourth grade science experiment uses marshmallows to make a great visual.

Learn more: Hojo’s Teaching Adventures

32. Create a new plant or animal

Science project showing an imaginary plant called a Snap-a-Doodle

Kids will really get into this project, indulging their creativity as they invent a plant or animal that’s never been seen before. They’ll need to be able to explain the biology behind it all, though, making this an in-depth project you can tailor to any class.

Learn more: I Love 2 Teach

33. Form ocean currents

Glass pan full of blue and purple swirls of water, with ice cubes and plastic sea creatures

Learning about oceanography? Demonstrate how ocean currents form using warm and cold water (and a few plastic sea creatures for extra fun!).

Learn more: Life Over C’s

34. Understand the impact of non-renewable resources

Index cards with various pasta types glued to them, including rotini, rigatoni, and shells (Fourth Grade Science)

This is a neat Earth Day activity . Discuss the differences between renewable and non-renewable resources, then have your class form “companies” to “mine” non-renewable resources. As they compete, they’ll see how quickly the resources are used. It’s a great tie-in to energy conservation discussions.

Learn more: The Owl Teacher

35. Explode a Mentos geyser

Fourth grade science students looking on in amazement as diet soda shoots high into the sky from bottles

Here’s another classic for the fourth grade science experiments list: diet soda and Mentos! Everything you’ve heard about this experiment is true, so choose an outdoor location and get ready to make an enormous mess as you explore nucleation.

Learn more: Steve Spangler Science/Mentos Geyser

36. Investigate decomposition

Plastic bag containing a plate of rotting food

Yup, it’s gross … so your kids will love it! Seal food items in a plastic bag and experiment to see what factors affect their decomposition, helped along by a heaping dose of mold.

Learn more: Mystery Science/Decomposition

37. Explore blood components

Glass jars full of corn syrup, red candy, and marshmallows (Fourth Grade Science)

Use simple kitchen supplies to create a jar full of “blood” that includes plasma, platelets, red blood cells, and white blood cells. (You can even snack on the blood cells along the way!)

Learn more: Almost Supermom

38. Watch gravity beads prove Newton’s laws

Child holding a cup of blue bead strings, watching them flow out of the cup

You’ll need a loooooooong string of beads for this experiment. Make your own by taping dollar store strings together, or buy a long bead garland . Pile them in a cup and get the beads going; it’s fascinating to watch inertia and gravity at work.

Learn more: Teach Beside Me/Gravity Beads

39. Make a model seismometer

Paper cup suspended by strings, with a marker sticking out the bottom making lines on a strip of paper

Explore the science of seismology and learn how scientists study earthquakes and their effects. This model seismometer is easy to build and fun to experiment with.

Learn more: Science Sparks/Seismology

40. Conduct an egg drop

Paper straws taped around an egg in a triangle shape (Fourth Grade Science)

Here’s one more classic to add to our list of fourth grade science experiments: the egg drop! The great thing about this project is that kids can do it at any age, with different materials and heights to mix it up. Hit the link below to get an egg drop project designed just for fourth graders.

Learn more: Buggy and Buddy/Egg Drop

41. Create cool colors with candy

Skittle heart science experiment for 4th grade.

This is a quick and easy experiment for around Valentine’s Day. All you’ll need are Skittles, a pie pan, water, and a heart-shaped cookie cutter. Your students will love the display of color, and they’ll get a sweet treat as well!

Learn more: Milwaukee With Kids

42. Predict the weather

4th grade science experiment to measure the strength of the wind.

Your students can easily (an inexpensively) construct their very own anemometer to measure the strength of the wind. Simply count how many revolutions the lead cup makes per minute, and your students have just become budding meteorologists!

Learn more: The Activity Mom

43. Demonstrate Newton’s law of motion

4th grade students can demonstrate Newton's Law of Motion with balloon rockets.

Who doesn’t love balloon rockets?! Your students will have a blast(off) displaying Newton’s third law of motion while learning about physics.

Learn more: School Science Experiments

44. Model basic chemical reactions

Classic 4th grade science experiment to demonstrate basic chemical reactions.

Balloons are a fabulously inexpensive and exciting supply to use to demonstrate a ton of fun scientific principles. In this classic activity, students will learn about chemical reactions by mixing together vinegar and baking soda. It’s messy, but it’s lively!

Learn more: Sciencing

45. Simulate lung function

Simulate how lungs expand and contract with this 4th grade science experiment.

What’s this? Yet another experiment you and your students can perform with balloons! Pick up a giant pack , and lead your students in exploring how lungs perform their function as well as the basics of air pressure.

Learn more: KiwiCo

46. Predict the behavior of phosphors

Demonstrate phosphors with this bright 4th grade experiment.

Your students will ooh and aah at the result of this exploratory way to show phosphors in action with a black light, different types of water, and a highlighter. The results of this experiment might surprise both you and your students!

Learn more: Cool Science Experiments Headquarters

47. Explore the causes of tooth decay

Demonstrating the science of tooth decay

They hear it from their parents all the time, but this experiment will prove to your students once and for all what can happen to their teeth when exposed to different drinks such as sugar water, soda, and milk.

48. Replicate the Dead Sea to exhibit density

Explore density using an egg and salt water.

You don’t have to take a field trip to the Dead Sea to demonstrate the principle of density! Create your own “Dead Sea” in your classroom by using salt water and an egg. Though this lab becomes rather detailed with the equations for density, you can easily adapt it to allow your students to explore the basic concepts of how less-dense solids can float in more-dense liquids.

Learn more: Science Buddies

49. Engineer kinematics with a ball run

4th graders construct a ball run to explore kinematics.

This engineering challenge not only demonstrates kinetic energy, but it will challenge your students’ engineering skills as well. They’ll work to construct a ball run with the goal of making their ball go the slowest .

50. Construct a groovy lava lamp

Homemade lava lamp for 4th grade science students.

Your students will explore the relationship between oil and water in this funky lab as well as observe a chemical reaction between an acid and a base. We imagine they’ll want to take theirs home to display as art as well!

Learn more:

Keep the STEM excitement going with these 25 Fantastic Free Fourth Grade Math Games .

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Watch your fourth grade science students' eyes light up when they try some of these activities. Make crystals, build a pulley, and more.

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