Get estimating with this spooky activity that asks your young mathematician to rely on their problem-solving skills to figure out how many items they believe are in spooky Halloween jars!

This fun activity encourages your child to develop their skills in not only taking measurements, but also in working with the measurements themselves.

Try this simple activity with your child to guesstimate the age of a tree in your yard and nurture her developing math skills while you're at it!

How powerful is the reaction between baking soda and vinegar? Find out here!

To help your child learn how to use a thermometer, try this temperature collecting activity at home.

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

Do plants breathe? Not exactly. They do respire though! This activity will help your child with see that plants are producing the oxygen we need to survive.

How does salinity affect the point at which water freezes? Kids will find out by performing this cool melting ice experiment.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

Time is an abstract concept that's difficult to grasp. But waiting for the turkey to come out of the oven on Thanksgiving is a concretely yummy experience.

Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

Introduce your fourth or fifth grader to volume by having him build rectangular prisms, and then count each sugar cube to check his volume calculations.

Practice conversions within the metric system in this fun math card game for third graders.

Have your student draft a blueprint for a haunted house, and trick (or treat) them into learning about geometry in the process.

Whatever is stacked in your cupboard can be used to help your child learn how to compare fractions and decimals. A great hands-on math lesson!

How much does 100 weigh? Play this fun guessing game with your child to commemorate the 100th day of school.

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

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

Add these fun chocolate Groundhog Day cupcakes to your holiday desert recipe repertoire! They're fun to make with your kids and a delicious winter snack.

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

Make your own marshmallows and mix up some very interesting third grade chemistry lessons while you're at it!

Topped with roasted pumpkin, prosciutto, herbs, and feta, these pita pizzas are a healthy, seasonal alternative to your classic pie.

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

Making decorative pottery is a great way to experiment with making patterns and texture on a traditionally smooth surface.

This cool science fair project teaches kids about temperature, density and buoyancy using balloons that float with normal air. No helium required!

Your third grader will be amazed at the explosive combination of vinegar and baking soda in these chocolate volcano cupcakes with white chocolate "lava."

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.