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

This easy Halloween-themed science experiment for first-graders is perfect for chilly October afternoons or great as a Halloween party activity.

This is a quick, easy science fair project that conveys the idea of density to preschool and early elementary children.

This winter garden project is just about bomb-proof, and believe it or not, it might even make a great gift. So get craft happy with your first grader!

Planning a beach vacation? Here's a cool nature craft you can make in the sand with your child.

Help your first grader explore the world of scientific measurement by "weighing" fruit with a "water scale"!

In this project children discover, identify, and sort seeds from a variety of fruits and vegetables

Challenge your young dinosaur lover to examine dinosaur footprints and then create their own dinosaur fossil in this hands-on activity.

In this project combining nature, art, math, and science, children make rubbings of leaves then observe shapes and structures and sort the leaf images.

With Halloween right around the corner, find a way to use your brain and reward your tummy with a new type of science -- candy science!

Children are imaginative story-builders. Create a shoebox habitat with your child to put those budding creative instincts to good use.

In this activity your child will create their very own marble maze!

Roasting pumpkin seeds makes for a great Halloween activity, and a healthy snack!

Study science with your first grader in this arts and crafts activity that models the reason why fall leaves change color with some paint and crayons.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

Develop your child's mathematical and engineering skills with this fun building brick challenge. In this activity, your learner will be challenged to create a boat out of building bricks.

Enjoy those warm spring and summer nights with your child while teaching some basic astronomy at the same time.

Take this "paper plate snack test" with your child for a hands-on lesson in making healthier choices to teach your child about what's in his food.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

In this experiment, students will create their own version of coquina, a sedimentary rock thatâs formed by seashells and sand, cemented by seawater minerals.

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

This project leads to an understanding that a whole may be built of smaller parts that fit and work together and provides an introduction to basic tools.

Give your local birds a treat — and your young birdwatcher some fun — with this simple DIY bird feeder.

Blanket forts are a kid classic! Let your child create a âfortress of solitudeâ on his own for reading, telling scary stories or for cozy cocooning.

This science fair project idea determines which method of hand cleansing is the most effective.

In this activity, your child will be challenged to build a tall tower out of building bricks! The instructions include questions prompts to guide students through the design challenge.

This experiment challenges students to forecast the weather based on the surrounding areas' weather.

In this activity, your child will be asked to create a boat that can successfully float while holding 25 pennies.