Join Mrs. McCartney for a Mystery Math Mistake, then learn to combine coins in different w Join Mrs. McCartney for a Mystery Math Mistake - T-Pops needs your help! We'll learn about coins and their ...

(bright upbeat music) - Good morning, boys and girls. Welcome back to Room Nine. It is Dr. Sanders in here getting ready for somewhat baseball. And knows (indistinct), but no, I am here in the largest ...