2nd - 4th Grade Engineering and Science Inquiry Resources : Page 12

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

How would you dry your wet clothes if your dryer didn't work? Find out with this fun experiment!

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.

Future engineers, unite! Discover how to keep a sandcastleâs bridge from falling into the moat.

Get down to the rubber with this science project that tests the effectiveness of different types of erasers.

The possibilities are endless with this fun Halloween-themed STEM activity! With simple supplies, your child will experiment, adapt, and use their creativity while they build structures using different specifications.

Science fair project that demonstrates the effect of detergent pollution on fresh water birds' ability to stay afloat.

Set off an a science adventure as you prepare a row of bee homes for your new visitors.

This science project explores the concept of being opaque or clear. Can you make something clear opaque? Or something opaque clear?

In this classic Ivory soap experiment, kids learn what happens to different types of soap in the microwave, and why!

Determine if gender affects the ability to identify different smells.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

Create a homemade pair of sunglasses with colored lenses to see just how light and color affect our sight! Use this fun project to practice science!

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

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

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

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.

This science project has students collect wood samples and invent new uses for different types of wood based on its properties.