3rd Grade Engineering and Science Inquiry Resources : Page 7

This science fair project idea explores how enzyme inhibitors, active sites, non-competitive enzyme inhibitors, and substrates work.

In this activity, students will think about the form and function of household objects as they compare and contrast kitchen serving spoons of various sizes and designs.

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.

Learn about savanna flora and fauna in this science project! Take a look at characteristics of tropical grassland plants and animals that help them survive.

Gather some friends for a bubbly soda taste test do determine calories' role in your favorite drinks.

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

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

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

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

Kids will make predictions about cricket behavior by conducting this fun and easy experiment which simulates different environments for crickets.

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

Which music genres have the fastest tempos? The slowest? This experiment determines if there's a relationship between beats per minute in a song and its genre.

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

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!

Determine if gender affects the ability to identify different smells.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

In this science fair project you will make a model of a cell membrane using very simple material.

Cleaning can be a chore, but not with this sudsy experiment!

This science experiment has students test whether a snail moves faster on concrete or dirt.

Discover flight initiation distance as you play around in the park with this fun bird watching project!

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.

This science fair project explores how osmotic pressure forces water through the root up into the plant.

In this experiment, kids will see if pruning tomato plants makes them more fruitful and learn about the factors that contribute to a plant's fruit production.

Climates with more snowfall have more coniferous forests and fewer deciduous ? Learn about how pine trees in a coniferous forest adapted to withstand snow.

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

Do you think heat can affect a plant's growth rate?

How do organic materials become soil? This science experiment measures what materials biodegrade.

This study evaluates if electronic devices commonly found in most households emit radiation, and if they do, how much?