Search 3rd Grade Science Projects : Page 4

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.

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

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.

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

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

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

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

Kids discover what a homogeneous mixture is by adding sugar to distilled water and identify the various factors affecting solubility.

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

What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!

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.

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

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

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

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

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

This science fair project examines how seeds hitchhike on animals and clothing.

This science fair project idea explores if the length of the string that an object is suspended on has an effect on how fast or slow it swings.

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.

Enter the buzz worthy world of bee watching and find out what time bees like to wake up!

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

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

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

These science fair experiments demonstrate the chemistry of rust and the oxidation process.