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This science fair project idea explores how length affects the weight a bridge can hold.

This first grade science activity brings the green grass of early spring inside while teaching your child about the cycles of growth.

This fun marbled paper craft uses things you're likely to have around your house, and it teaches kids some simple chemistry too!

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

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.

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

This activity works well with a group or just with a parent and child, and it can make a great party game since it's both fun and inexpensive.

You don't need to head to the Arctic to experiment with life in an igloo. Learners can build their own ice igloo at home from water and empty milk containers.

First grade science often covers solids, liquids, and gases. This silly science explores serious facts about the difference between all three.

Perk up your front porch with this hanging vase craft, perfect for spring and for getting kids outdoors!

Make some easy homemade yogurt with your young scientist, and see what a few 'live' bacteria can do in the right conditions!

In this activity, young learners will make a balance using a plastic hanger and weigh a variety of small objects using candy corn.

In this Halloween-themed activity, young learners will find out what happens when they mix two household items together to create a surprising chemical reaction.

Help your first grade scientist learn about metamorphosis by observing the life cycle of some interesting creepy crawlies.

Want to boost math and science learning? Take a bug expedition and give your first grader practice observing and charting what they see.

Slip some science into storm watching with a homemade rain gauge!

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

This weather spinner will improve observation skills by encouraging children to examine and track weather details and patterns.

Water can go from solid to liquid to gas...but how does popcorn go from kernel to snack? Invite your first grade scientist to find out.

Magic, science, or household cleanser? Let your second grader decide with this practical, nontoxic chemistry experiment with acids and bases.

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

Create a mini plant habitat with your kid to help teach him what it takes to make an ecosystem work.

This will encourage your child to utilize their observation skills, develop aesthetic awareness, build artistic drawing abilities and learn about the seasons.

Explore the scientific concept of capacity by seeing how many pennies you boat can hold before it sinks!

Your child might have noticed how bubbles quickly lose their colors and pop. Check out this creative way to make those bubbles last longer.

Is our water polluted? Help your young scientist understand the importance of taking care of the environment with this simple experiment.

Create a three-dimensional X-ray of your child's hand in this simple modeling activity. All you need to get started are black paper and drinking straws

Create a habitat for a butterfly right in your own backyard, and build your first grader's science knowledge while you're at it.

This recipe makes bubbles that not only blow up nice and big, but do tricks and experiments! How do you do it? It's not a secret, it's science!