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3rd and 4th Grade Science Activities : Page 7

In this project students experiment with making music using only glasses of water.

Musical Glasses

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Form and Function

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

Light Intensity and Distance

The possibilities are endless with this fun Halloween-themed STEM activity! With simple supplies, your child will experiment, adapt, and use their creativity while they build structures using different specifications.

Halloween STEM Building Challenge

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

Snow to Liquid Ratio

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

How to Make a Steam Powered Rocket Boat

This science fair idea examines hydrogel superabsorbent polymer crystals. They can absorb 500 times their weight in water. Can they absorb other liquids too?

Can superabsorbent polymer crystals absorb any other liquids besides water?

Children combine an acid and an alkaline substance to simulate a volcano eruption in this fun experiment.

Volcano Project

In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

Mineral Streak

Saturn is the ringed planet in our solar system, a gas giant with rings made of ice and dust. Let's make a cool scale model with an old CD and some glitter!

The Rings of Saturn: A Scale Model

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

How to Make a Water Wheel

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

How to Tell Time by the Sun

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.

Plastic Wrap Science Fair Project: Polymer Permeability

Discover that the absorbency of fabrics depend largely on the shape and structure of the individual fibers that make up the fabric.

Which Fabrics are Most Absorbent?

This project compares the strength of one, two, and three-ply toilet paper.

The Relationship Between Toilet Paper Ply and Strength

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

Barometric Pressure

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

Temperature, Air Humidity and Static Electricity

This kinesthetic learning activity will help your fourth grader get a firm grasp on the immensity of the solar system.

Set Up a Solar System of Kids

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

How to Demagnetize a Magnet

Has your child ever asked you how a submarine works? Here's a simple bathtub project that will make for a hands-on answer.

Homemade Submarine

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

What Is the Best Way to Wash Your Hands?

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

DIY Electromagnet

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

Testing Water Hardness

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.

Seafloor Spreading Model

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

How A Kazoo Makes Sounds

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

Simple Machines

This science fair project idea examines the reason boats are shaped and engineered.

Keep the Boat Afloat

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

The Mozart Effect

Do plants breathe? Not exactly. They do respire though! This activity will help your child with see that plants are producing the oxygen we need to survive.

Do Plants Breathe?

Discover whether cold or hot water from the faucet will boil faster on the stove.

Does Hot Water Boil Faster Than Cold?

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