Hannah Maharaj
3rd grade
McLendon Elementary School
DeKalb County Schools

Contents

Task GPS Addressed Video Classroom Materials

Task

Overview In this task, students will gain an enduring understanding of repeated addition and the related multiplication problem. Students will develop problem solving skills and communicate their mathematical thinking and ideas to their peers. Illustrative Task Help set up tables for your upcoming family reunion. 36 relatives need a place at a table to sit and enjoy their food and drinks. You may use the following tables. Square tables that seat one person to an edge for a total of four people at a square table. Circular bistro tables that seat exactly three people. Hexagonal tables that seat one person to an edge for a total of 6 people. Long, rectangular tables that seat twelve people. Pentagonal tables that seat one person to an edge for a total of five people. Which table would you need the most of? Show how you would figure out how many of those tables you would need. Which table would you need the least of? Show how you know. Choose two types of tables and draw your method for seating all 36 relatives for the barbecue. Write a number sentence to describe what you’ve drawn. Suppose the only tables you had were pentagonal ones that only seat five people per table. Explain how you would seat all of your relatives.

GPS Addressed

M3N3. Students will further develop their understanding of multiplication of whole numbers and their ability to apply it in problem solving. a. Describe the relationship between addition and multiplication (repeated addition) g. Solve problems requiring multiplication.

Video Information

Use these questions to guide your thinking about some of the important teacher ideas in the lesson featured in the video clip. What kinds of questions does the teacher ask to promote students’ problem solving? How is the teacher gauging students’ current understandings and building from those understandings? Consider the GPS standards listed with this video. What makes this lesson different from lessons you have taught on this topic?

Classroom Materials

Lesson Plan Family Reunion Handout