In this activity, your learner will be challenged to create their own tic-tac-toe grid out of building blocks.

This tricky building block challenge asks your learner to think creatively. They will work on their divergent thinking skills as they try to fill up an index card perfectly with building bricks.

Start your toy engines -- this is going to be a fast and friction-filled race!

Can you imagine a sky filled with bright, colorful bubbles? Make this whimsical scene come alive with bubble science!

Help your child create a working lung model that fills with air just like the lungs inside of his own chest when he breathes.

This science fair project idea explores the egg's thin membrane.

Discover whether different amounts of water added into a wine glass will produce a different pitch when their fingers are rubbed along the rim.

Help your child create a magical miniature garden in the most unlikely of places: a recycled plastic bottle!

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

This science fair project idea explores plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.

Your child will learn science and make a fun new malleable toy with this balloon sandbag science experiment.

This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

In this experiment we will be determining whether birds prefer certain colors of seed.

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

Science fair project that identifies the differences between soils from different environments and attempts to figure out why those differences exist.

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

Show your child that the simplest ingredients (salt and water) can be used to illustrate the concept of density!

Demonstrate the properties of pressure and surface tension to explain how water can stay inside an upside down glass using cardboard.

In this simple science project, learn about what causes dew and what affects dew formation with a drinking glass, ice, and a soda bottle.

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

Here's a classic celery science experiment that uses celery and food coloring to demonstrate how plants absorb water.

Crystals are a very special structure. In this third grade activity, your child will learn how to grow salt crystals.

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

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

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

Show your kids the power of baking powder by conducting a simple experiment. Make four batches of cornbread, all identical except for one thing: baking powder!