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!

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!

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

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

This little chick is so cute that your child will want to make a whole flock to call her own.

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

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.

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

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

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!

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

Teach your third grader about the concepts money and purchasing with this "Mock Card Shop" activity.

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

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.

Learn about the microclimate of your backyard by tracking rainfall, temperature, and observed weather with hand drawn charts and graphs.

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

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.

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

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.

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

Nothing chases the blues away like a trip to the boardwalk. Bring the fun home with this do-it-yourself version that sneaks in some math practice.

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

Play this fun basketball game to help your third grader master their multiplication tables.

Delay your child's sugar overload, and develop his critical thinking skills, by doing some "sweet sorting" of his Halloween treasures!

Make math fun and easy with this activity that challenges your child to use their addition and multiplication skills to win a race!

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

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

This is a great game to help your child learn number concepts in multiplication and division.

Here's a super fun game to get in some place value practice with your child!

Challenge your third-grader to sharpen her new math skills--and maybe do the planet a favor, too.