Launch into learning with this worksheet on Gemini 4, one of the original missions in the early days of the U.S.'s space program.

Let your little weather observer discover the four seasons! She'll match up each season with its proper picture to show her knowledge of how weather changes.

Fossils have a lot to teach us about life on earth, but they can also be used to help teach kids the scientific method.

Rain or shine, get ready for some weather watching! Record data to observe the weather patterns over the course of a week.

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

How does the butterfly become so beautiful? Learn about the four stages that it goes through in its life.

Ever wonder what the earth is made of? Practice reading and writing, and learn about the four layers of planet Earth.

Here are four examples of mineral resources for kids to think about, plus a short explanation of what a mineral resource is.

Review the rock cycle with this second-, third-, and fourth-grade crossword puzzle!

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

What are the different layers of soil? In this worksheet your child will use clues to identify four major soil components: silt, topsoil, humus, and clay.

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

In this worksheet, children identify and illustrate four things all plants need to grow. They then answer three simple research questions about plants.

Do you wish to boldly go where no astronaut has ever gone? Blast off with this coloring page that features four new planets for you and your crayons to explore.

For kids learning geography or earth science, this is the perfect review sheet for drilling students on common geography terms and phrases.

Discover the animals and plants of the past in this fossil-focused worksheet!

Worm your way through this soil maze, which doubles as a fun way to review the names of the different soil layers.

Predict the weather with this fun-filled forecasting worksheet! Your child will review basic weather terms and practice her observation skills.

Children discover and review the parts of a flower and what they do as they complete this botany-themed crossword puzzle.

Test your memory skills as you review the different types of animal body coverings with this animal memory match game!

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

Can you help Cornelius create a crazy compost concoction? Help your child review his knowledge of compost and recycling with this fun worksheet.

Renewable energy is extremely important for the Earth's future! Test your child's knowledge of renewable resources with this review sheet.

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.

Can you tell which types of weathering caused each of these changes in the earth? This activity is a great way to review the 3 main types of weathering.

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.

Here's a fun way to review photosynthesis with your child! She'll show off her science knowledge as she answers questions to complete the crossword puzzle.

Learning about the functions of plant parts doesn’t have to be puzzling! Review the parts of a plant with this crossword for first and second graders.

Quiz your little scientist on his knowledge of the soil layers! He'll be reviewing some important earth science concepts and key terms.

If your child is fascinated by outer space, he'll love this solar system word search! While reviewing planet names, he'll ponder the mysteries of the universe.