Lesson objective: Students will understand and apply the meanings of division to represent models and solve word problems.

Students bring prior knowledge of models for math (arrays) from 2.OA.3. This prior knowledge is extended to the representation of division as students build equal groups, arrays, number line and repeated subtraction models . A conceptual challenge students may encounter is understanding that division is represented by subtracting equal groups.

The concept is developed through work with models which allow students to visualize the concepts and meaning of divison.

This work helps students deepen their understanding of number because students will recognize and represent division of whole numbers and their quotients.

Students engage in Mathematical Practice 1 (Make sense of problems and persevere in solving them) as they model multiplication and division using diagrams, arrays, number lines, drawings, etc.

**Key vocabulary:**

- Dividend
- Division
- Divisor
- Inverse relationship
- Quotient