4th Grade Science Activities : Page 4

In this activity, you'll not only make your own bouncy balls at home, but your child will also learn how polymers are made.

In this fun science project, learn about what happens to cut fruit and experiment with how to stop apples from turning brown.

Learn about magnifying glasses, concave lenses and inverted images by sending rays of light through a magnifying glass in this cool science fair project!

In this project, all you need is a protractor to learn how to use the altitude of Polaris to find latitude on Earth. Polaris is also known as the North Star.

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

Throughout history, people have used song as a teaching and memory tool. This project explores whether song improves a person's ability to retain information.

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

What's the chemistry behind dyeing Easter eggs? Will adding vinegar to dye help the eggshell absorb the color? This colorful science project has the answers!

In this CD hovercraft science project, students will construct their own DIY hovercraft.

Make some easy homemade yogurt with your young scientist, and see what a few 'live' bacteria can do in the right conditions!

Experiment about connection of senses of taste and smell. Using blindfold and noseplugs, administer blind taste test. Analyze results and organize data.

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

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

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.

Your kid can learn about the process of making frozen yogurt and enjoy a homemade, flavorful dessert. Experiment with this fun, chilly food!

The goal of this project is to create an exciting topographical map out of dough.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

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

Make a spring collage with your child to get them outside and those creative juices flowing!

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

In this exciting design challenge, your child will use design thinking skills to create a mixture that can inflate a balloon.

This science fair project idea explores the different properties of matter.

In this activity, students will create a stop motion animation by creating a clay figure and taking a series of digital photographs.

In this hands-on design challenge your child will make their very own Rube Goldberg Machine.

Show your child how to construct a homemade thermometer. It's hands-on fun and a great way to learn about this important instrument!

Children combine an acid and an alkaline substance to simulate a volcano eruption in this fun experiment.

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

Challenge your learner to design and build a city of their own in this creative engineering activity.