Activity
K-5 Math Teaching Resources

K 5 Math Teaching Resources: Decompose a Factor [Pdf]

For Students K - 1st Standards
Students will learn how to determine the product by decomposing the factors.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: 5.nf Grass Seedlings

For Teachers 4th - 8th
For the sake of this commentary, let R be the height of Rual's seedlings (of course students do not need to use a letter to represent any number in this task). Student must compare the size of each of two products (112xR, and 34xR) to...
Lesson Plan
Better Lesson

Better Lesson: Understanding Multiplication With Equal Groups

For Teachers 3rd Standards
Third graders develop their understanding of multiplication by grouping objects into equal groups to model the factors and products.
Unit Plan
Khan Academy

Khan Academy: Fraction Multiplication as Scaling

For Students 4th - 6th Standards
Interpret how multiplying by a fraction greater or less than 1 affects the product. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: Reasoning About Multiplication

For Teachers 4th - 8th
This is a good task to work with kids to try to explain their thinking clearly and precisely, although teachers should be willing to work with many different ways of explaining the relationship between the magnitude of the factors and...
Unknown Type
Khan Academy

Khan Academy: Practice Multiply Single Digit Numbers

For Students 3rd Standards
Practice questions multiplying various one-digit numbers where students have to determine the product or a factor.