How to Write a 4th Grade Science Fair Report
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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- Writing the Body of the Report
- Open a blank document in MS Word
- Press Enter ” five times
- Heading Hypothesis
- Thought was going to happen in the experiment
- Heading Background Information
- Heading Materials
- Heading Procedures
- Heading Results
- Heading Conclusions
- Heading Ideas
- End of the Report
- Heading Acknowledgments
- List the names
- Heading Bibliography
- Used in your research
- Title Page, Abstract, & Table of Contents
- Move the mouse cursor
- Type your project title
- Heading Abstract
- Click on Insert in the Word toolbar on Insert in the Word toolbar
- Heading Table
- Recorded data, pictures, and graphs from project experiment
- Microsoft Word
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.
- Save your report periodically while typing to prevent data loss.
- See article Resources for examples on citation format.
- 1 Science Buddies: Writing a Research Paper for Your Science Fair Project
- 2 Science Buddies: Science Fair Project Final Report
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 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.
- Title page.
- Abstract . An abstract is an abbreviated version of your final report.
- Table of contents.
- Question , variables , and hypothesis .
- Background research. This is the Research paper you wrote before you started your experiment.
- Materials list .
- Experimental procedure .
- Data analysis and discussion. This section is a summary of what you found out in your experiment, focusing on your observations, data table, and graph(s), which should be included at this location in the report.
- Conclusions .
- Ideas for future research. Some science fairs want you to discuss what additional research you might want to do based on what you learned.
- Acknowledgments. This is your opportunity to thank anyone who helped you with your science fair project, from a single individual to a company or government agency.
- How to Write a Bibliography in APA and MLA styles With Examples .
- Write the abstract section last, even though it will be one of the first sections of your final report.
- Your final report will be several pages long, but don't be overwhelmed! Most of the sections are made up of information that you have already written. Gather up the information for each section and type it in a word processor if you haven't already.
- Save your document often! You do not want to work hard getting something written the perfect way, only to have your computer crash and the information lost. Frequent file saving could save you a lot of trouble!
- Remember to do a spelling and grammar check in your word processor. Also, have a few people proof read your final report. They may have some helpful comments!
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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40 Clever 4th Grade Science Projects That Will Blow Your Mind
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
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
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: 3m.com
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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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.
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.
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.
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.
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
Paper Airplane Experiment
Experiment to find the best design for a paper airplane
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?
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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: Education.com/DIY Hovercraft
25. Learn about capillary action
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
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: Education.com/Mood Rings Validity Test
27. Create a smartphone projector
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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: Education.com
Keep the STEM excitement going with these 25 Fantastic Free Fourth Grade Math Games .
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