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

Determine the differences between various bicep exercises, both in terms of how much muscle exertion they create and how they affect your heart rate.

Practice counting to 100 independently with this American flag craft project! 

Play this fun math numbers game with your kindergartener! Practice following instructions as you roll the dice and count.

It's important to be able to add and subtract quickly and accurately, and this activity is the perfect way to practice.

This flexible activity for preschoolers features jellybeans, counting, coloring, and the five senses.

Tangrams are a kindergarten staple, but now it's time to take them to the next level! Get your child started on geometry with this tangram puzzle.

Prepare for some scary Halloween counting practice! This game encourages players to knock down cylinders and then add to determine their scores.

Looking for a cool game to help your first grader learn her 11s? Look no further than this clever one-person card game.

This science fair project idea quantifies exactly how accurate the cricket thermometer is.

Help your child make an imaginative, inexpensive spaceship from recycled materials. When the spaceship is ready, count backwards from ten and then BLAST-OFF!

Use reusable, recyclable materials--along with a dose of imagination--to build a castle with first grade geometrical forms.

This science fair project idea discovers the effect of (high) heat on animal cells.

Compare animal and plant fats and observe, and record, and draw conclusions about their similarities and differences.

This science fair project idea tests the effect of heat- at varying temperatures- on the viability of biological enzymes.

This project examines the affect of temperature on viscosity and surface tension of different liquids.

This countdown to Christmas craft is fun for kids who are excited for the holiday. Countdown to Christmas with this fun holiday activity.

You've heard the expression "burn rubber" but do you know how heat affects rubber? Examine the impact of temperature on rubber in this fun science experiment.

Multiplication facts are a necessary skill, and this board game provides a fun way for your third grader to practice them!

Here's a place mat your second grader can create, based on the classic frontier tradition of patchwork quilting.

Building a rocket ship is a great way for kids to learn about measuring and construction. It'll fuel their creative side too!

Most parents probably wouldn't mind subtracting 8-9 years off their age. Here's a fun third grade subtraction activity that may do just that.

In this matching activity, your kid will match the clock faces representing analog time with the numeric readings representing digital time.

If your young child is a kinesthetic learner, this equation board is perfect for teaching him addition and subtraction facts.

This project explores whether music affects the growth and health of plants.

This project examines how temperature affects the volume of gas in balloons.

Forget the measuring stick! This fun math activity uses a body part, your child's hand, as a ruler.

This science fair project determines what effect substances have on ice, and which of these products most effectively melts ice.

Toss playing cards into boxes while you practice addition and multiplication with decimals in this fun, fifth grade math game.

How many steps long is the hallway? Kids put their graph-making skills to work as they make a step map of their own house.