3rd and 4th Grade Science Projects Activities : Page 11

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

This science fair project will help students learn about non-vascular plants, such as mosses.

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.

In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.

This science fair project idea explores whether white light can be separated into different colors.

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

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

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.

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

Have you ever noticed the way a dropped stone makes a fun pattern in a pond or lake? What's the science behind these splashy occurrences?

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

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

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

In this simple circular motion experiment, you'll observe tangential velocity and learn about how acceleration and centripetal force affect an object.

This science fair project idea investigates if fats add to the flavor of food.

Does skin thickness really decrease fruit spoilage? Find out in this science fair project idea!

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

Science fair project in which you will learn more about the natural world by preserving and identifying different animal tracks.

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

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

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

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.

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

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

This project examines whether playing music during class helps students learn or if it distracts students from learning.

What's the difference between a microwave and an oven? Use mashed potatoes to explore which kitchen appliance does a better job at keeping food warm.

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

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.

What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.