Set up a fun guessing game for your curious kindergartener, one that will test her ability to use all five of her senses.

Play this hidden number game with your preschooler or kindergartener that will give them a leg up in learning numbers.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

Play with, explore, and describe everyday objects with your preschooler to get her ready to learn basic math skills and concepts.

Boost your preschooler's math and verbal skills by having her participate in simple, fun activities that teach her how to sort, count, and categorize objects.

This science fair project idea discovers whether there are some objects that do not fall at a constant rate.

Explore convex and concave objects and how they reflect light.

Investigate the different ways in which objects and organisms can be classified, create your own. then have volunteers classify using their own systems.

In this science fair project, students test how objects float and sink in liquids of different densities.

In this science fair project, students will use four different household objects to see which ones form the most or best crystals.

Do heavier objects fall faster than lighter ones? Students learn the answer by watching the effect gravity in a vacuum has on a coin and a feather.

Crisps are the hidden gem of the homemade dessert world.

Your kids will love this tradition of finding a leprechaun's gold hidden all over.

Would your child like to learn about a hidden world? All she needs to do is open her box of markers!

With this hands-on activity, you'll show how fall colors are hidden in the leaf all year long!

Practice reading with this fun game, where your first grader will "hunt" for hidden words around the house.

Use the appeal of the common road sign to your advantage by creating a game with hidden learning opportunities.

Formulate a hypothesis and use the scientific method to determine the guess what is hidden in a box. Test abilities of volunteers, without opening box.

Does your child love learning about dinosaurs? Does he like digging around in search of hidden treasures? In this fun activity he'll do both!

Check out this fun leaf chromatography science fair project idea for middle school students and discover the hidden pigments in leaves.

Introduce your young artist to this art form with this fun and creative activity, which blends arts and crafts with patterning for hidden math practice!

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

Write a poem with a twist! Your child can write a poem that also has a secret sentence hidden within the words of the poem.

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.

Sweet corn muffins are a delicious and unexpected Valentine's Day treat. Make a batch of sweet corn muffins with a hidden surprise this Valentine's Day.

Create clear sound shakers so your preschooler can observe and compare the different sounds that objects make!

This experiment examines if space objects become round after reaching a certain mass.

In this parts of speech fall scavenger hunt, kids will search for all the hidden leaves, sort them into parts of speech categories, and then practice creating their own sentences using the words they find.

This science fair project idea compares the mass and density of objects.

Find out whether matching resonant frequencies can cause objects to shatter.