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

Get your kindergartener started on Earth science with a lesson on the seasons. Kids write the name of each season under the correct picture.

In this colorful worksheet, children practice categorizing a few familiar objects by the season they are used in.

This word search helps expand kids' animal vocabulary and introduces them to animals that live in shells, all while keeping them entertained.

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

Explore the circle of life with this informative coloring sheet! Help your student color and learn the names of each stage of a dogâs life.

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.

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 little one will decide which objects sink, and which ones float!

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

This worksheet tests kids' understanding of basic heredity by asking them to match parent turtles with their offspring based on similar traits.

Does your little one love animals? Here is a fun activity that will hone her reasoning skills, as well as give her a review of a few animal words.

Fact: This worksheet is about unusual animals from all over the world. Opinion: This is the best fact and opinion worksheet ever!

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

Go on an adventure hike and discover what's in your backyard or around your neighborhood! Help your preschooler look for living and non-living things.

Learn weather words with this worksheet, which asks your child to look at the picture of the weather and circle the word which best describes it.

Teach your preschooler to choose healthy foods instead of sweets. Help him move his way through the maze by picking out the healthy foods.

What's in the ground beneath our feet? Explore the science of soil with your child using this handy printable!

Find out fun facts about Monarch butterflies and create your own colorful butterfly in this worksheet. Then turn it into a pretty placemat!

Explore your sense of sight with this fun worksheet.

Your child may have heard of the Tasmanian devil from a cartoon or from a friend at school, but this worksheet will show him the real Tasmanian devil.

Kids draw what they see in the mirror for this kindergarten science worksheet. They learn that sight is one of our senses and that we use our eyes to see.

Help your kindergarten students learn about sequencing and science as they learn about the five stages in a ladybugs life.

This worksheet will help your child identify the different parts of the body by asking them to fill in the blanks on the diagram.

This worksheet combines the five senses with the fun and interesting topic of weather predictions!

Practice weather comparisons with your blossoming meteorologist!

Create and observe your very own rainbow using light and water with this science experiment worksheet!

Get your child thinking about the five senses with this matching worksheet that gets her to consider taste, touch, sight, smell and hearing.

This worksheet teaches kids about animal habitats. Kids match each animal to its habitat, then draw a picture of their favorite animal in its home.

What a wonderful world word search! See if you can find all 10 of the Earth-related terms in the word search.