Students will be able to double two-digit numbers.
Hold up four objects, like pencils, and tell students that you need double the number of pencils you are holding.
*Ask students how many pencils you’ll have if you double the number you are holding (eight).
Hold up eight pencils and repeat the question.
Hold up 16 pencils and repeat the question. (Note: at this point, students may have a more difficult time answering the question; provide the answer if students are stumped).
Tell students that today we are going to be doubling numbers, just like I doubled the number of pencils I was holding. Doubling a number is multiplying it by two.