Science Activities : Page 29

Free science fair project idea examining how different types of water affect plant germination and growth.

Recreate the fantastic phenomena of solar eclipses with your child using just a flashlight, a quarter, and her very own face!

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

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

This science project is to discover which Black Walnut tree tissue contains the most concentrated amount of Juglone, a substance that works like an herbicide.

Is there more air particulate matter in an urban or rural environment? Test your knowledge with this science fair project.

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

The purpose of this science fair project is to investigate whether we can simulate how craters are formed and predict their size and shape.

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!

Make a DIY golf putter and design your own golf putting course in this 2nd-3rd grade arts and crafts/game activity.

Consult mechanics, automotive specialists for advice. Build a real engine or a scale model. Test and demonstrate its mechanical properties.

It's easy to plant your own in-home container garden! This planter contains pizza-themed herbs and is a perfect early gardening activity for kindergarteners.

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.

Construct and experiment with a periscope using reflected light rays to gather an image.

Check out this fun science fair project idea to measure bacterial colonies from door handles and explore the effectiveness of different cleaning agents.

This science fair project determines if the allelopathic chemical produced by the black walnut tree biodegrades immediately or persists over several days.

This experiment provides a graphic illustration of the chemical reaction that occurs when you activate a hand warmer.

This fun, think-outside-the-box activity introduces kids to gravity and other basic scientific concepts as they construct an impressive marble run!

Use sticks and stones to create create an outdoor version of tic-tac-toe!

Here's an investigative activity in which your child will discover real-world names and uses for sugar and find out how it is hidden in many different foods.

The objective of this science fair project is to determine whether there are gender differences when boys and girls view optical illusions.

What happens when colored beams of light mix? You might be surprised.

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

The purpose of this science fair project is to learn which substance best preserves apples. Learn about enzyme interactions in fruit and scientific processes.

The project compares three different methods of testing turbidity in water: the secchi disk, spectrophotometer, and turbidity test kit.

Let your kid experiment with textures among fabric and other materials that are smooth, rough, soft, or slippery—and then they'll make a texture book!

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

A homemade lava lamp gives any room a retro flair. Find out how to make a homemade lava lamp, and learn some science too, with this educational activity.

Examine the impact of insecticides on plant growth.