
Bird watching can be a fun activity. But when winter comes, some birds leave. They migrate to a warmer place. Some birds stay during the cold months. They can keep warm in the cold weather.
Photo Credit: Nathan Rathbun/USFWS.
Scientists ask and answer questions. You are a scientist. Look around. You … read more
In December, there is a special day. It’s the International … read more
Let’s learn about the heart. Do you know where your … read more
© 2025 McGraw-Hill Education. All Rights Reserved.