These STEM design challenge cards ask learners to build something new for a specific reason or purpose and are a great way to foster creative thinking.

Break down a word to create new ones with this fun worksheet for second through fifth graders!

Use these STEM design challenges to foster creativity and critical thinking skills in young learners while introducing them to the engineering process.

Children will plan our their STEM design, reflect on the process of building their creation, and brainstorm ways they could make their design even better.

Challenge your science student to record a shadow over the course of a day and make the connection between shadows and the time of day.

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

Our ecosystems need a protector; is your third grader up to the challenge? Identify harmful pollutants in a science worksheet that doubles as a coloring page.

Help your child practice his science skills with this science worksheet, which will challenge his knowledge of reptiles and ask him to solve a puzzle!

Here's a fun way for kids to review their knowledge of earth science terms. Challenge your child to give a definition of each word as he finds it.

A fun challenge for kids, this Earth Day crossword puzzle is a great way to review facts about the Earth and get a reminder on how to live green.

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

Get this earth science worksheet that will challenge your child's knowledge of volcanoes and teach him some new vocabulary.

Crossword puzzles are a great way to make life science learning fun. This one's all about natural selection, and it's sure to give your child a fun challenge.

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

Looking for a worksheet that will give your kid help with his life-science skills? This printable will challenge his knowledge of birds.

Help your child learn about the nervous system and the digestive system with this fun worksheet, which will challenge his knowledge of physiology.

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

Test your third grader's biology knowledge with this worksheet, which challenges him to separate invertebrates from animals with a backbone.

Confused about continents? Get better acquainted with all the continents on earth with this word scramble.

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

Soon-to-be scientists, here's a great coloring page featuring flowers and insects! Learn the scientific names of a ladybug and a daffodil.

All kids love animals, but how much does your child know about them? Kids will get to learn some animal vocabulary with this wild crossword puzzle.

Searching for a worksheet that will help your child practice their reading skills? This printable uses life science as a background to help young readers.

Which comes first, genus or phylum? To complete this life science crossword, kids need to put the 9 levels of biological classification in the correct order.

From glaciers to mountains to wetlands, our planet has lots of different landforms. Help your child learn all about them with this fun earth science crossword.

Is orange juice a solid or liquid? What about a cookie? Practice classifying everyday objects in this first- and second-grade states of matter worksheet!

Some people think alligators and crocodiles are the same, but there are some distinct differences. Check out this cool worksheet to learn what they are.

Not your typical crossword, this puzzle will have your child learning to recognize the shapes of the continents. Great for map skills and vocabulary!

Match each animal to its home in this first- and second-grade life science worksheet!