Multiplication Using Arrays and Area Models

Cate·

Math

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At a Glance

SubjectMath

Original Prompt

4.NBT.5: Multiply a whole number of up to four digits by a one‑digit whole number, and multiply two two‑digit numbers, using strategies based on place value and the properties of operations. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models. Students will interpret multiplication as repeated addition and as rectangular/area models and compute products for one‑ and two‑digit factors using array and area models. Students will explain their reas

This teacher guide provides an overview of a lesson focused on multiplying using place value strategies and area models, suitable for a 50-minute class. It outlines the materials needed, such as grid paper and counting chips, and sets up a 'Classroom Store' context to make the learning experience engaging. Students will learn to build rectangular arrays to visually represent multiplication problems and use area models to break down numbers by place value. The guide includes key vocabulary, step-by-step multiplication modeling, guided practice problems, and strategies for explaining their mathematical thinking. The lesson culminates in an exit ticket where students reflect on their understanding of place value through multiplication. The goal is to foster a deep understanding of multiplication by visualizing concepts and promoting discussions about various strategies used to solve problems.