Preschool - 2nd Grade Engineering and Science Inquiry Activities : Page 4

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

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

Help children understand the power of germs and the importance of hand washing with this visual activity that introduces the concept of scientific inquiry.

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

Here's an easy experiment that lets your first grader practice the scientific method, while watching a caterpillar eat.

In this science fair project, young children discover what happens when two fluids that have different densities get together.

This project makes young children uniquely aware of their sense of touch and its ability to alone give them information about the world around them.

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

In this project, build an insect model that shows how the head, thorax, and abdomen fit together! Learn insect anatomy by constructing a paper mache critter.

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

This science fair project idea investigates how the shape of an object affects drag.

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

Do different types of oil mix or stack? Find out in this science fair project idea!

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.

This science fair project idea explores how length affects the weight a bridge can hold.

Make an edible play dough with your child to help her develop her sensory and motor skills.

This engaging project encourages young children to practice and refine the important scientific skills of sorting and classification.

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

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

In this activity, you'll send your kindergartener on a scavenger hunt to find sounds and create a sound recording. Here's how!

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.

Help your child explore chromatography, which is the process of separating colors or pigments, and create a neat art project in the process!

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.