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

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

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

This classic children's game demonstrates how sound travels through air vs. through a solid.

The objective of this science project was to build a model of a volcano and observe reaction between different substances, including baking soda and vinegar.

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?

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 science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

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

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

In this exciting design challenge, your child will use design thinking skills to create a mixture that can inflate a balloon.

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

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

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

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

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

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

Use this fun activity to make an optical illusion picture that helps your kindergartener explore the sense of sight, and sharpen his observation skills!

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

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

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

How does a flashlight work? Kids will make a complete circuit and explore how voltage contributes to brightness with this science fair project idea.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

Kids will learn some cool stuff about chemical reactions by determining what happens when you mix different concentrations of hydrogen peroxide and yeast.

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

With this cool floating rocks project, your child will get some hands-on experience with buoyancy and learn why certain rocks like pumice are able to float.

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

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

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.

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.