Unit 1
Factores y múltiplos
Unit Goals
- Students apply understanding of multiplication and area to work with factors and multiples.
Unit Narrative
In this unit, students extend their knowledge of multiplication, division, and the area of a rectangle to deepen their understanding of factors and to learn about multiples.
In grade 3, students learned that they can multiply the two side lengths of a rectangle to find its area, and divide the area by one side length to find the other side length.
To represent these ideas, students used area diagrams, wrote expressions and equations, and learned the terms “factors” and “products.”
In this unit, students return to the concept of area to make sense of factors and multiples of numbers. Students find as many pairs of whole-number side lengths as they can given a rectangle with a specific area. They make sense of those side lengths as factor pairs of the whole-number area, and the area as a multiple of each side length.
Students also learn that a number can be classified as prime or composite based on the number of factor pairs it has.
Throughout the unit, students encounter various contexts related to school, gatherings, and celebrations. They are intended to invite conversations about students’ lives and experiences. Consider them as opportunities to learn about students as individuals, to foster a positive learning community, and to shape each lesson based on insights about students.