Showing Results for add and subtract

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

Sting your little insect enthusiast with some knowledge about the insect order Hymenoptera. He'll learn a fun fact as he colors this yellowjacket.

How well does your child know the layout of our Solar System? This worksheet focuses on the biggest planet, Jupiter.

This worksheet teaches all about the planet Saturn and its placement in the Solar System.

Teach your child about the layout of the Solar System with this simple worksheet, featuring the planet Neptune.