
Clouds are made of tiny drops of water or ice in the air. They form when air rises and cools. This makes the water in the air change into a liquid.
Photo Credit: Don Hammond/Design Pics
Look at the penguin. Penguins cannot fly. Their wings are … read more
Have you ever seen a parade? There are more than … read more
It’s the Fourth of July! Let’s learn about why and … read more
© 2025 McGraw-Hill Education. All Rights Reserved.