1st - 4th Grade Physical Science Resources : Page 7

An hour glass, also known as a sand clock, keeps time. In this activity, your child will make her own sand clock and measure the time it keeps.

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

Think you can blow up a balloon without using your mouth? This isn't just a cool trick, it's also a great way to introduce chemistry and biology concepts.

On the next chilly, winter day, invite your fifth grader to make a hand warmer by experimenting with the loaded combination of a few natural ingredients.

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

Have your child build his own mini waterfall, and help him develop his planning, problem solving, and architectural skills.

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

Make a DIY golf putter and design your own golf putting course in this 2nd-3rd grade arts and crafts/game activity.

Combine the science of physics with the fun of playing spy. Your young detective can make his own tiny looking glass. It's simple to make!

Let your fourth grade chef mix up butter and sugar with scientific principles about different states of matter, and get delicious toffee, too.

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

Help your second grade scientist explore the timely topic of wind speed using a version of the classic Beaufort Scale.

Here's a great activity that uses corks and toothpicks to create a fleet of floating boats. Which design makes for the most seaworthy vessel?

Try this chemistry experiment with your curious kid and get some "shocking" results!

Engineers in training can get started with this simple wheel-and-axle construction activity.

Take a look at forensic science with your child. She'll learn how to take a shoe impression, just like the detectives do!

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

Your second grader will love this simple soda bottle race car activity. Make a ramp and customize your car for an entertaining way to learn scientific concepts.

Show your child that the simplest ingredients (salt and water) can be used to illustrate the concept of density!

I scream, you scream, we all scream for homemade spearmint ice cream!

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

It's easier than you think to make homemade play dough -- just a few pantry staples makes a natural version of the toy that kids have loved for generations.

This is a fun way to introduce kids to the concept of volume, and give them a quick hands-on activity to boot.