Kids practice identifying solids for a lesson on the states of matter in this 1st grade physical science worksheet.

For each item on this first grade science worksheet, kids match a piece of clothing with the thermometer showing a temperature for wearing the item of clothing.

I spy with my little eye... six simple machines! Here's a fun way to help your child review the simple machines.

Kids practice identifying liquids for a lesson on the states of matter in this 1st grade physical science worksheet.

This science vocabulary activity is packed with basic science vocabulary words to help the youngest kids warm up to scientific concepts.

In this worksheet, kids learn about friction by answering questions about the amount of friction in different situations.

Can your child tell what will be attracted by a magnet? Challenge him to think about why magnets attract certain objects.

Pull the lever on learning! Get to know one of the six simple machines with this worksheet about the lever.

Introduce the basic concepts of sinking and floating with this fun worksheet. Your budding scientist will decide if these objects sink or float!

When we push or pull an object, we exert force on it. Get your child thinking about force by challenging him to describe how each person is exerting force.

Every four years something funny happens with our calendars -- we add a day! Why do we do this? Discover the science behind leap year.

Did you know that the screw is actually one of the six simple machines? This handy machine helps to make work easier!

Budding inventors can get a fun review of the simple machines with this word search.

Little scientists can learn about a fundamental concept of physical science with this worksheet all about density!

Magnets are fun to play with, but how do they actually work? Have your child circle the objects he thinks the magnet will attract.

Did you know that an elevator is actually one of the six simple machines? Help your child understand how the pulley works.

Young inventors will have a blast with this worksheet on compound machines! Use three of the six machines together to make work easier.

Here is a brief introduction to The Great Pacific Garbage Patch for kids!