In kindergarten, your child spent lots of time counting things one by one. But in first grade, he'll need to be able to count in groups, especially by fives.

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.

In this insulation experiment, you'll learn which clothes keep you warm in the cold, and which make you shiver.

Make a fun refrigerator graph with your first grader in order to help her develop those crucial graphing skills, while engaging with the whole family.

This experiment examines whether storing your orange juice at different temperatures affects its acidity.

Here's a fun at-home activity that will help your child strengthen math skills using high and low temperature data, and become a master temperature tracker!

This science fair project idea measures physical dexterity as a function of temperature.

For most second graders, a good secret code is just about irresistible. Here's one that builds math facts while you're at it!

This Hanukkah countdown craft will help your little one count the eight nights of Hanukkah. Make a Hanukkah countdown calendar with your child.

Any time is the perfect time to whip up a delicious batch of fluffy pumpkin cookies.

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

Discover if temperature settings in a fridge make a drastic difference in terms of bacterial growth.

These delicious Easter Basket Cupcakes are a simple, creative holiday treat. These cupcakes sit in waffle bowls with festive coconut grass and jellybean eggs.

This engaging, fun, pattern resist painting is inspired by your little one's love of shapes.

Teach your preschooler color recognition using this handy egg carton sorter. She will group objects by color and learn to recognize their names with this tool.

This project commemorates the milestone of completing the first 100 days of school, while giving your child a manipulative to practice counting to 100.

Draw some educational value out of a summer stocked full of adventures!

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

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.

This project concerns activity happening millions of miles away, on the sun.

Science fair project in which you will build your own algae photobioreactor which will meet the physiological requirements of algae for maximum growth.

Bake some cookies with an oven that collects sunlight and traps the shorter wavelengths (heat!).

Encourage your kindergartener to investigate and chronicle the weather she observes during the coldest months of the year.

Use empty soda bottles to create a fun bowling set that helps your first grader practice addition skills!

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

Combine fun sensory play with early number awareness in a squishy sun catcher project. It's a fun way for your kid to learn about numbers.

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.

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

Analyze competed scientific studies to determine the effectiveness of ancient remedies. Create a chart that illustrates the effectiveness of these treatments.

Make caterpillars out of papier-mache and let the kids explore their inner creepy crawler.