
There are different kinds of tools. Some are controlled by the body. Others are controlled by a person’s brain. Engineers make new tools to help people.
What Do You Think? How can this technology help someone?
Photo Credit: yurakrasil/Shutterstock
Many communities have warming centers. People come inside during a … read more
We get vaccines to protect us from getting sick. They … read more
Sundew plants have tiny, colorful tentacles. The ends have sticky … read more
© 2025 McGraw-Hill Education. All Rights Reserved.