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

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

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

Hone observational skills and introduce the basics of data interpretation with this data gathering activity all about the different colors people wear.

Here's a math activity that uses coin riddles to help your third-grader improve his coin-counting and logical thinking skills.

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

This fun geometry game requires players to use measurement, find perimeter, and draw polygons. It's great for a fourth grade math student!

This interdisciplinary card game will have your third grader working on math facts as he travels through the solar system!

Help your second grader to a better understanding of how to count and represent money with age old game of tic-tac-toe.

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.

Playing a tactile game with multiplication will help your child get a better grasp of basic math concepts and transform your kid into a master multiplier.

Help your child practice multiplication tables with this mental and physical multitasking game that uses a hula hoop to get into the swing of things.

Find the area in this fun math card game. You'll help your child start thinking in terms of units as you create shapes out of playing cards.

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.

Create some cards and a factor board and get ready to practice multiplication. This game will help your kid get one step closer to memorizing times tables!

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!

Practice of math facts is usually limited to drill sheets and flashcards. But kids are more likely to tune in to math facts if practice is presented as a game!

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!

Engage your third-grader in this version of the classic game and she will get lots of practice using mental math to solve addition and subtraction problems.

This footwear-focused activity introduces fractions as part of a set and it's the perfect way to generate excitement about fraction concepts.

This activity is a great starting point for practicing mental math because it is quick, easy and involves only simple addition facts.

Okay, engaging in a graphing activity may sound ho-hum, but if you use fun data, it changes the picture entirely.

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

Help cement the concept of place value with this simple activity that involves creating a set of dials made from Styrofoam cups.

With this fun craft activity, your child can design and "make" his own money, for use as currency and math practice at home.

Money is a difficult concept to grasp. Help your kid get the hang of it with this pocket change triple Venn diagram activity.

Getting kids to memorize their times tables can be worse than pulling teeth. Sweeten the deal with this activity that combines math and sugar.

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.

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.

Help your child improve his coin counting skills in these two math games that have him race to reach $1.00.