Preschool - 4th Grade Engineering and Science Inquiry Resources : Page 4

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?

Learn about magnifying glasses, concave lenses and inverted images by sending rays of light through a magnifying glass in this cool science fair project!

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

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

In this CD hovercraft science project, students will construct their own DIY hovercraft.

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

What's the chemistry behind dyeing Easter eggs? Will adding vinegar to dye help the eggshell absorb the color? This colorful science project has the answers!

Understanding absorption means understanding why certain fibers and materials can absorb water! Kids will see absorption in action in this simple project.

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

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

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

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

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.

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.

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.

This project examines if computer screen and text color affect retention and if people subconsciously prefer combinations of colors that help their retention.

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

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

Reinforce your child’s understanding of the alphabet by helping them construct all of the letters using pipe cleaners.

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

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

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

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.

By incorporating natural materials and the powers of observation, your child will become a backyard naturalist while building early writing and drawing skills!

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?

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.

While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!