# ALEX Resources

Narrow Results:

ALEX Classroom Resources
Subject: Mathematics (5), Mathematics (5)
Title: Grade 5 Mathematics Module 2, Topic B: The Standard Algorithm for Multi-Digit Whole Number Multiplication
Description:

In Module 2, Topic B, place value understanding moves toward understanding the distributive property by using area models to generate and record partial products (5.OA.1, 5.OA.2), which are combined within the standard algorithm (5.NBT.5). Writing and interpreting numerical expressions in Lessons 1 and 2 and comparing those expressions using visual models, lay the necessary foundation for students to make connections between the distributive property, as depicted in area models, and the partial products within the standard multiplication algorithm. The algorithm is built over a period of days, increasing in complexity as the number of digits in both factors increases. Reasoning about zeros in the multiplier, along with considerations about the reasonableness of products, also provides opportunities to deepen understanding of the standard algorithm. Although word problems provide context throughout Topic B, the final lesson offers a concentration of multi-step problems that allows students to apply this new knowledge.

Subject: Mathematics (5)
Title: Grade 5 Mathematics Module 2, Topic D: Measurement Word Problems with Whole Number and Decimal Multiplication