
Lenses help us see. Lenses help us learn.
Look at this tiny animal. It is in a drop of pond water. We can use a microscope to see it. What do you see?
What Can You Do? How can you use lenses?
Photo Credit: Peter Parks/NHPA/Photoshot
King Tut Day is celebrated on November 4. This was … read more
June is a special month. It’s National Fresh Fruit and … read more
When people climb tall mountains, they bring oxygen. They carry … read more
© 2025 McGraw-Hill Education. All Rights Reserved.