3rd and 4th Grade Science Projects Activities : Page 4

This science fair project idea researches the different layers of the atmosphere and creates a visual representation of the atmospheric layers.

This science fair project idea investigates how color affects temperature.

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

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

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

In this experiment you will replicate the mummification process by making a hot dog mummy.

Learn about the fruit fly life cycle in this experiment. Capture fruit flies to examine various stages of insect metamorphosis.

Demonstrate how you can make your own compass using a magnetized needle. It also allows you to compare magnetic north and geographic north.

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.

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

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

In this pinto bean germination experiment, you'll learn about how fertilizer aids in growing pinto beans into seedlings.

In this experiment you explore how tectonic plates move to create land and expand bodies of water.

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

This science fair project idea determines what household items are good conductors of electricity.

Discover whether cold or hot water from the faucet will boil faster on the stove.

Learn how to make a food pyramid with animals in a a coniferous forest ecosystem around your home.

Crayons aren't just good for creating colorful masterpieces -- they're also great for science!

This science fair project teaches students the differences between fruits and vegetables.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

This science fair project idea produces varying pitches of sound.

Demonstrate the properties of pressure and surface tension to explain how water can stay inside an upside down glass using cardboard.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.