3rd and 4th Grade Science Activities : Page 6

I scream, you scream, we all scream for homemade spearmint ice cream!

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.

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

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

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 science fair project idea determines if the color of light affects the growth of plants.

Help your child learn about animal classification with this fun and delicious activity.

How does a flashlight work? Kids will make a complete circuit and explore how voltage contributes to brightness with this science fair project idea.

In this design challenge, your child will make a bottle rocket using typical household items.

Do hand soaps and sanitizers prevent the growth of bread mold? If so, why? Kids will find out with this fun and informative science fair project idea.

In this enlightening transpiration experiment, kids will explore how the loss of water from plants through transpiration contributes to the water cycle.

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!

Have you ever noticed the ridges on a dog's nose? In this project, we take several dogs' nose prints and discover just how unique they are!

Create a soda bottle garden that defies gravity! This hanging terrarium is housed in a soda bottle and perfect for crafty kids with a growing green thumb.

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

This science fair project idea investigates the hardness property of minerals.

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!

Try this simple activity with your child to guesstimate the age of a tree in your yard and nurture her developing math skills while you're at it!

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

This science fair project idea produces varying pitches of sound.

Learning about how plants grow is a building block in the early grades science curriculum. Put a fun twist on this life science concept with these cup monster friends!

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

How do you tell time without a watch? Use the sun! This simple activity will show your child how to build his own sundial.

This science fair project idea determines which method of hand cleansing is the most effective.