Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

In this investigation, three different juices are tested to determine which juice contains the greatest amount of vitamin C.

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

This science fair project idea examines which type of insulation holds in the most heat.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

Learners hypothesize about and experiment with soil erosion in this hands-on activity.

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

This science fair project idea investigates whether plants can survive being frozen.

In this fun activity, your child will create their very own solar oven to bake s'mores!

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

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

Learn whether Mylar Balloons last longer than Latex Balloons or vice versa.

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

Turn an abstract lesson into a practical craft with the fun and colorful creation of dough earth layers!

In this design challenge, your child will create a parachute for a small toy using typical household items.

Teach your child how to make an all-natural, yellow-brown dye, using just walnut shells and water. This deep dye can be used on textiles, art, and wood.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

This science fair project idea explores whether talking to a plant will help it grow.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

This science fair project idea researches the definition of ‘biodegradable’ and explores this in a real-life setting.

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

This science fair project idea explores the different properties & interactions of sugar molecules.