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!

Learn the many features of planet earth in this easy earth science vocabulary chart.

Does your second grader love farm animals? This easy writing exercise will help your child be more observant about tracks left by some familiar animals.

It's easy being green when you have our Earth Day game for a guide. Just print out this Earth Day game and get ready to score one for the planet.

Introduce your child to the inclined plane, one of the six simple machines that helps to make work easier for us!

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

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

See which snail has gotten the farthest with this 2nd grade measurement snail race worksheet.

Meet the master of compound machines: Rube Goldberg! His wacky contraptions put a whole new spin on the use of simple machines.

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

Introduce children to photosynthesis with this fill-in-the-blanks life sciences worksheet!

Learn to identify and name the parts of a seed in this two-page science worksheet and quiz!

What's your favorite animal? Kids love answering that question, and with this animal research graphic organizer, they can write all about it.