This science fair project idea investigates whether air has mass and weight.

In this science fair project, young children notice and track changes in trees throughout the year.

In this science fair project, young children discover what happens when two fluids that have different densities get together.

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

This science fair project teaches students about wilting and browning of salad greens.

This science fair project introduces children to static electricity and the idea that electricity is more than lights and plugs.

In this science fair project, young children observe, record, and create collections of shapes in their world and increase their powers of observation.

Can you fool your eyes and your brain with an optical illusion? The purpose of this science fair project is to demonstrate various kinds of optical illusions.

In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.

In this awesome science fair project idea, kids will be attempting to pick up different objects using snail slime.

In this science fair project, we'll explore how blocking the sun's light can stop those can stop photosensitive paper from changing color.

Dinosaurs were huge creatures that left behind huge footprints that lasted for millions of years. In this science fair project, kids learn how dinosaur tracks were left behind!

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

In this science fair project, young children will become aware of and have the opportunity to experience the four basic tastes: sweet, sour, salty, and bitter.

In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.

This science fair project idea teaches that time always passes at the same rate and nothing we do in our daily life âreallyâ affects how fast it moves.

This engaging project encourages young children to practice and refine the important scientific skills of sorting and classification.

Get a better understanding of water content by dehydrating carrots.

Make a kindergarten "discovery table" that reinforces both science and writing skills. Here's how:

Children use their design thinking skills and powers of observation to create and construct a bird nest.

This weather spinner will improve observation skills by encouraging children to examine and track weather details and patterns.

Make an edible play dough with your child to help her develop her sensory and motor skills.

Check out this silly game that will put your kid's animal habitat knowledge (and acting skills) to the test.

In this simple and social activity, children use size comparison skills to find objects in nature that are bigger, smaller, longer, and shorter.

Help your child hunt and capture bugs to observe to practice important science skills and satisfy her curiosity simultaneously!

By incorporating natural materials and the powers of observation, your child will become a backyard naturalist while building early writing and drawing skills!

This is a fun and inexpensive project and it's a great way for your child to build basic geometry skills, like shape recognition and pattern/angle familiarity.

Use this fun activity to make an optical illusion picture that helps your kindergartener explore the sense of sight, and sharpen his observation skills!

This two-ingredient dough, sometimes called "moon sand," is a quick and cheap way to let kids explore their senses, build fine motor skills, and play.

In this fun activity, kids practice measurement and boost fine motor skills as they learn all about how fossils form and even make a few of their own!