How do the phases of the Moon and gravity cause spring tides and neap tides? Does the Sun play a role in the tides? Figure it out in this fun science project!

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.

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

The goal of this project is to create an exciting topographical map out of dough.

Does putting soapy water on plants help or hinder plant growth? Kids learn about greywater and how it affects plant growth in this cool science fair project.

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

Roasting pumpkin seeds makes for a great Halloween activity, and a healthy snack!

Learn all about balance and motion as your child designs a corn maze!

This science fair project idea experiments with spinning color wheels and optical illusions.

Check out this fun and easy science fair project idea on germination of a seed and learn to identify exterior and interior parts of a bean seed.

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.

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

In this fun science project, learn about what happens to cut fruit and experiment with how to stop apples from turning brown.

Here's an experiment that will have your child experimenting with cake ingredients to learn about the chemical reactions that happen when a cake's in the oven.

In this fun experiment, we'll find out how color affects heat absorption!

In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.

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.

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

Kids learn about potential energy, and mechanical energy, and how to make power from water with one of our favorite renewable energy projects for kids.

This project examines if computer screen and text color affect retention and if people subconsciously prefer combinations of colors that help their retention.

In this activity your child will create their very own marble maze!

Want to make Halloween truly eerie? Science to the rescue! These ghouly hands come alive with a little help from simple chemistry.

Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.

In this science fair project, students make their own rain gauge to measure rainfall.

In this design challenge, your child will make a bottle rocket using typical household items.

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

This taste buds science experiment demonstrates how strongly our sense of smell controls what we taste.

What's the chemistry behind dyeing Easter eggs? Will adding vinegar to dye help the eggshell absorb the color? This colorful science project has the answers!

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

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