
This is Dr. Kizzmekia Corbett. She is a scientist. She studies vaccines. A vaccine is a shot that helps people fight an illness.
Photo Credit: Timothy Nwachukwu/The New York Times
May 8th is World Red Cross Day. Let’s look at … read more
Tying your shoes is a big deal. It takes lots … read more
Flamingos are tall birds. They have long skinny legs. Flamingos … read more
© 2025 McGraw-Hill Education. All Rights Reserved.