4th Grade Engineering and Science Inquiry Resources : Page 7

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

Tree rings can tell the age of the tree but also information about the world. This science experiment uses tree stumps to discover new facts.

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

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

This science fair project idea discovers whether there are some objects that do not fall at a constant rate.

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

This science experiment tests if dog saliva can really help heal wounds.

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

Can you plant the insect-attracting borage plant to increase the amount of beneficial insects in your garden? Find out in this experiment!

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Could there be toxic chemicals lurking in the cupboards and closets of your home?

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!

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

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 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.

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.

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.