Engineering and Science Inquiry Activities : Page 3

Check out this cool science fair project on identifying rocks and minerals for kids.

The goal of this middle school science fair project is to examine the effect of caffeine on plant growth.

In this design thinking activity, your child will choose an animal to research, learn about the animal’s habitat, and then replicate the animal's habitat using household items.

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

Make your own greenhouse - out of a balloon! Your child will learn how greenhouses work as they plant radish seeds and watch them grow.

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

Discover how and which salt melts ice the quickest.

Do earthworms like moisture or darkness? Find out as we explore the relationship between earthworms and light.

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 science fair project idea discovers which brand of bubblegum produces the largest bubbles.

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!

What is vegetative reproduction? Find out how you can clone plants and regrow cabbage from a stem in this cool experiment!

This is a quick, easy science fair project that conveys the idea of density to preschool and early elementary children.

Kids love the dramatic Mentos and Diet Coke experiment conducted in this awesome science fair project.

This science fair project idea investigates how magnetism can defy the force of gravity.

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

This science fair project explores how salt and sugar affect the melting rate of ice in water.

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

Start your toy engines -- this is going to be a fast and friction-filled race!

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

This experiment will evaluate if chewing gum affects students' test performance.

In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.

In this challenge, students are tasked with creating an insulated cup that will keep beverages colder for longer than a regular cup.

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

In science fair projects, middle school students discover why nitrogen fixing bacteria are important to plant growth.

In this fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

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

Kids learn about Brownian motion, diffusion, and how temperature is a key factor affecting the rate of diffusion in this cool science project.