What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

Why do ants like sugar? Do ants like artificial sweeteners too? Kids find out with this great inquiry-based science fair project.

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

The objective of this experiment is to evaluate whether funny advertisements are more or less effective than serious advertisements.

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

The purpose of this science project is to determine whether the amount of air in a soccer ball affects how far it goes when kicked.

In this CD hovercraft science project, students will construct their own DIY hovercraft.

Research history of programming language. Design a new or improved programming language. Create a display that illustrates the features and improvements.

In almost every preschool classroom is a sensory table. Learn how to make one at home!

Make an edible play dough with your child to help her develop her sensory and motor skills.

Learn about endothermic and exothermic reactions and energy exchange by experimenting with temperature change in chemical reactions.

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

Challenge your learner to design and build a city of their own in this creative engineering activity.

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

Have your child kick off their summer vacation by making a miniature water slide!

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

In this free science fair project idea, kids will conduct an easy electrolysis of water experiment to test solutions of salt, baking soda, tap water, and more.

The buoyant force of water explains why some objects float in water. But why do some objects sink? Find out in this physics experiment and learn about density.

In this activity, your child will be challenged to make a tower using paper cups.

Learn how to use the Punnett Square to predict the gene combinations of dominant and recessive traits in this fun and easy genetics science project!

It's not actually that hard to get energy from garbage! Kids learn how to make biogas in the form of methane with this cool and easy science fair project idea.

In this windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

What is the best stain remover for clothes? In this fun and easy science fair project idea, students will identify the best method for laundry stain removal.

Help kids tap into their inner inventor by teaching them how to make peanut butter through trial, error, and lots of taste testing!

This science fair project idea creates a sedimentary rock and to investigate what takes place during the rock cycle.

Here's a first grade ladybug game that explores how air can move solid objects, and adds some measurement practice, too. Play, learn, and enjoy!

Which battery lasts the longest? In this science fair project, kids will test popular brand name batteries like Duracell and Energizer against generic brands.

This project examines the amount of saltwater required to affect the growth of plants and subsequent effects on growth and development.