Without light sources, we wouldn't have any light. Can you imagine a world without any light sources?

This experiment requires only lemon juice, salt, sugar and grapefruit. Your budding scientist can get a great introduction to science by testing her own tongue!

Searching for help with you kid's geography skills? This printable worksheet will teach them the continent of South America.

Searching for a way to help you kid practice their geography knowledge? This printable is a great way to learn the countries in North America.

Fly high with The Wright Brothers, two siblings who soared to the forefront of history with their design for the first modern airplane.

Guglielmo Marconi was a man who made waves in radio and sound. Learn about his life and work, then answer a short essay question in this science worksheet.

Introduce the basic concepts of sinking and floating with this fun worksheet. Your little one will decide which objects sink, and which ones float!

If a ship went down, would these items sink or float? Your little one will decide, with this fun worksheet to help him hone sorting and categorizing skills.

Learn a basic concepts physical science with this fun worksheet. Your little one will decide which objects sink, and which ones float!

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

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

Help your little learner understand the concept of buoyancy with this fun worksheet. He'll decide which items will keep this frog afloat!

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

Budding scientists can learn about an important physical science concept with this worksheet all about density!

Engage your little scientist with a fun word search, all about sinking and floating! He'll be learning a basic concept of physical science.

This worksheet uses a paper bird to demonstrate center of gravity, and practices following directions and fine motor skills.

Searching for a worksheet that will give your kid help with his science skills? This printable will challenge his knowledge of the metric system.

Challenge your child's knowledge of astronomy with this space-themed worksheet, which focuses on the timing of cosmic events.

Boost your second grader's knowledge of space with this fun worksheet, which will have her unscrambling the answers to planetary trivia.

Change up your regular classwork with this hands-on science worksheet!

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

Looking for a worksheet to challenge your child's knowledge of science? This printable asks him to identify a solid, liquid and gas.

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.

Never heard of the planet Pirjute? That's because it's Jupiter, with mixed-up letters! Kids unscramble planet names on this third grade science worksheet.

Let your 1st grader become a mad scientist in this fun science board game, and encourage her to become a lover of the interesting subject.

Who knew that the machines of the world are all made of just 6 simple machines working together? Introduce your child to simple machines with this worksheet.

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

Crank out a better understanding of simple machines with this worksheet all about the wheel and axle!

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

Wedge your way into physics fun! You and your child can learn a bit about one of the six simple machines with this worksheet all about the wedge.