N2A3TNp13
Answer to Problem 13:
9 ´ 8 = 72 chicks or 8 ´ 9 = 72 chicks
Teacher Notes:
Students should have numerous opportunities to use manipulatives to model problem situations. Modeling multiplication problems with pictures, diagrams, or concrete materials helps students learn what the factors and their products represent in various contexts.[1]
[1] National Council of Teachers of Mathematics. (2000) Principles and standards for school mathematics (p. 149). Reston, VA: Author.