(bright upbeat music) - Good morning, boys and girls, and welcome back to Room 9. It is Dr. Sanders, and I'm here to take your little ELA and math to all my pre-K and K campers. But what do I always ...

Use one of the services below to sign in to PBS: You've just tried to add this video to My List. But first, we need you to sign in to PBS using one of the services below. You've just tried to add this ...