Explore the difference between asexual and sexual reproduction in organisms with this middle school science worksheet!

How cool are chromosomes? Read what Steve the savvy scientist has to say about chromosomes and genes before testing your knowledge with some fill-in-the-blanks.

Learn more about the skin (and the science behind pimples -- ew!) in this printable life science diagram.

Is your fourth grader learning about electricity? This worksheet is all about circuits, tests her skills and reinforces the concept of how a circuit works!

This Awesome Anatomy coloring page focuses on the heart and all the different parts of it.

First graders can learn all about the sun by reading the facts then using what they've learned to label each layer of the sun.

Magnets are fun to play with, but how do they actually work? Have your child circle the objects he thinks the magnet will attract.

This skeletal system worksheet, featuring a funny diagram of a human skeleton, is just the thing kids need to master their skeletal system vocabulary.

These babies have lost their mamas! Can you help them? Use sorting and categorizing skills to match the baby animal to its adult form.

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.

As your child matches up the body systems vocabulary with the correct definitions, she'll boost her life science knowledge and have fun doing it!

Budding paleontologists will refer to a word bank to identify 10 dinosaur-related vocabulary words in this playful word search puzzle.

To understand electricity, you have to get down to the basics. Explore the literally microscopic world of electrons to get a grasp on electricity.