Preschool - 3rd Grade Engineering and Science Inquiry Resources : Page 3

This science fair project idea investigates which objects float and sink in honey, water, and oil.

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

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

Build a 3d animal cell model with this cool science fair project, which helps kids visualize and understand the function of a cell's parts and organelles.

Do hand soaps and sanitizers prevent the growth of bread mold? If so, why? Kids will find out with this fun and informative science fair project idea.

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

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

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

Water, along with soil and light, is a necessary component for plant growth. So what's better for promoting plant growth: tap water, or rain water?

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

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

How powerful is the reaction between baking soda and vinegar? Find out here!

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

How does smell affect taste? Ready your taste buds--in this project, you'll gather some test subjects and do a taste test to see how much smell affects taste.

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.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

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

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

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

Find out whether a longer airplane will fly farther or a wider paper airplane.

The goal of this fun science fair project idea is to microwave candy and investigate: do some colors of M&Ms melt faster than others?

Here's a simple science activity that will help your child better understand how wells bring us water.

Is it magic? No...it's the amazing, gravity-defying capillary action experiment! Kids will love this dramatic and enlightening science fair project.

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

In this project combining nature, art, math, and science, children make rubbings of leaves then observe shapes and structures and sort the leaf images.