Learn all about Alexander Fleming, the man who invented penicillin and the happy accident that brought him to it.

Stretch your backbones and learn about the creatures that have a spine and those you don't!

Test your knowledge of prehistoric animals with this life sciences crossword puzzle!

An energy pyramid is a simple way to graphically show how energy flows in an ecological community; somewhat similar to the food pyramid.

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

Children learn to identify the tracks of a pine marten, chipmunk, mountain lion, mountain goat, and grizzly bear in this matching worksheet.

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.

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!

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

In this worksheet, children practice identifying animals of North America by their tracks.

Can you identify the difference between inherited and acquired traits?

In this North American animal tracks worksheet, students hone their observation skills by matching tracks to animals.

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

Explore humans’ inherited traits with this fun science worksheet!

Ponder the pedigree of plants with this worksheet about inherited traits for upper elementary students!

The next time your parents ask you to wash your hands before dinner, read this worksheet about Joseph Lister and take their advice!

Step into the swamp ecosystem with this engaging life science worksheet!

In this animal-based life science worksheet, students will learn that animals inherit certain traits from their parents.

Track the traits passed down from parent to offspring!

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

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