Lesson objective: Students will apply their knowledge of using models to represent division and multiplication.
This lesson provides an opportunity for students to apply their knowledge and understanding of using models to a mathematical situation. Students are asked to determine how cookies can be shared equally among friend.
Key Concepts students will use:
-
unitizing underlies the idea that products of whole numbers can be interpreted as a number of groups of a number of objects.
- quotients of whole numbers can be interpreted as a number of shares (partitive or distribution division) and a number of groups (quotative or measurement division).
Skills students will use:
- representing division and multiplicatiton through the use of arrays, equal groups, number lines, repeated addition or repeated subtraction models.
- students will practice with the inverse property of multiplication and division.
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:
- array
- equation
- factor
- dividend
- division
- division
- multiplication
- product
- quotient
- repeated addition
- repeated subtraction