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.

Explore solids and liquids with your young scientist by making gluep, a goopy substance that can behave like both a solid and a liquid!

In this activity, your child will make her own "quicksand" to better understand how a substance can be both fluid and solid at the same time.

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!

Help your child learn about animal classification with this fun and delicious activity.

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!

This slightly messy, but tons-of-fun tactile activity will cement the idea of the land and water as pictured on maps in your young learner's mind.

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.

Make these homemade shell fossils and introduce your child to the wonders of science!

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 your preschooler practice observing and experimenting with this exciting activity where they'll get to examine objects below the water's surface!

Your kid will be captivated as she watches liquids change color before her very eyes during this fun science project that introduces some chemistry basics.

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.

Some fossils have been been preserved for billions of years! Help your kid understand how fossils are created and preserved with this crafty project.

The objective of this science fair project is to study the photosynthesis process and demonstrate the important role that leaves play in the process.

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

Inspire your child to put on her engineer hat for the day, as she builds her very own, double-decker bridge.

Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.