Is it solid or liquid? Create oobleck and witness the amazingly weird oscillation between the two!

This classic children's game demonstrates how sound travels through air vs. through a solid.

This science project teaches students to classify different shapes of leaves.

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

Take the spookiness out of spiders with this web-making activity! Your child will practice talking about and creating shapes in this Halloween craft, and learn about spiders along the way.

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

Try this experiment to give your curious kid a more "solid" understanding of how temperature affects the states of matter.

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

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

In this project combining nature, art, math, and science, children make rubbings of leaves then observe shapes and structures and sort the leaf images.

In this activity, your child will make her own "quicksand" to better understand how a substance can be both fluid and solid at the same time.

What's a liquid? What's a solid? What better way to experiment than by turning a childhood favorite, ice cream, into a homemade science lesson!

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

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.

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.

Here's an innovative math puzzle that you can create with your fourth grade math student.

Turn sweet treats into miniature masterpieces with this candy melting activity!

This game is a great way to help your child remember the names of shapes. Give it a go and before you know it, your kid will have all her shapes down pat.

Take your child's knowledge of shapes out of the classroom and into the real world!

Get your child writing as she describes the four seasons, then decorates a shape for each to hang in the house!

Explore geometric shapes and pattern as your child makes her very own Hawaiian kapa cloth.

Decorate with a banner made from paper, clover shapes and buttons to celebrate spring or St. Patrick's Day!

This season is a great time to explore the many shapes, sizes, and species of evergreen trees. Download our "field guide" activity and learn more!

Geometric shapes can often be tough to remember. But, with a little bit of art, imagination, and writing, practicing geometry has never been so much fun!

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

Here's a fun activity that will help your child become familiar with both punctuation marks...by using pasta shapes!

Weave colorful Easter basket pictures out of construction paper and ribbon that open to reveal an assortment of fun Easter shapes!

Complete with the drippy, glittery shapes that make icicles so popular, this paper project can be hung everywhere from door frames to tabletops.

In this fun art exercise, kids practice seeing multiple shapes and colors inside a water-filled glass and recreate them as a still life using colored paper.