
Plants and animals have traits. Their traits come from their parents too!
What Do You Think? What traits do you share with others?
Photo Credit: Alexey Kozhemyakin/Shutterstock
What happens when a water bear gets too dry? The … read more
Earth Day is April 22. We think about how we … read more
Engineers use science. Engineers use math. Engineers are curious. They … read more
© 2026 McGraw-Hill Education. All Rights Reserved.