3rd grade Instructional Guide

Academic Vocabulary symbol, equal, multiplication, product, factor, quotient, dividend, divisor, division

Suggested Models

Suggested Strategies

Part Part Whole/Multiplication and Division

● Use a bar model to solve for the unknown whole number in an equation ● Use counters to model the relationship between multiplication and division ● Use base ten blocks to represent array and area models ● When given an equation such as 4 × ? = 40, students explain their thinking, for example:

one part × number of parts = whole whole ÷ number of parts = one part

- 4 groups of some number is the same as 40 - 4 times some number is the same as 40

- I know 4 groups of 10 is 40 so the unknown number is 10 - • The missing factor is 10 because 4 times 10 equals 40

3.OA.4