3rd Grade Science Activities : Page 5

This science fair project idea explores substances that cause a bubble to last longer.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

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?

How does salinity affect the point at which water freezes? Kids will find out by performing this cool melting ice experiment.

In this outdoor science activity you'll find tips on how to create a nature journal by choosing a native plant or animal and tracking that species.

In this project students experiment with making music using only glasses of water.

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

We all know that the Moon has different phases, but it can be hard to figure out why. Try this activity to see how the Moon's phases really work.

This interdisciplinary card game will have your third grader working on math facts as he travels through the solar system!

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

Try the classic balloon-on-the-wall trick with your kid and watch static electricity in action.

This Valentine's Day, pair up science and crafting with this simple crystal formation project that's sure to bring a little love into your home.

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

In this classic Ivory soap experiment, kids learn what happens to different types of soap in the microwave, and why!

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

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

Gymnosperms are coniferous trees that reproduces using pine cones to spread seeds. Check out this simple pine cone experiment to learn about the process!

This biodiversity project examines the biodiversity in your own backyard.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

Help your curious third grader construct a dazzling spinning wheel that will teach him about the science behind colors while providing some silly entertainment!

Science fair project that examines condensation and the conditions needed in order for dew to form.

This science fair project idea investigates the difference in reaction times between boys and girls.

Your third grader will be amazed at the explosive combination of vinegar and baking soda in these chocolate volcano cupcakes with white chocolate "lava."

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

This craft is a great way to explore the fascinating world of spiders and their webs as you collect spider webs from around your house with your third grader.