Join Mrs. Gray for a Mystery Math Mistake with D.C. He needs help figuring out the missing parts in his number bonds. We represent numbers 11-19 in more than one way. Episode 318/Kindergarten Math ...

Image made with elements from Canva. Let’s go back to grade school—do you remember learning about prime numbers? They’re numbers that can only be divided by themselves and one. So 2, 3, 5, 7, 11, and ...