School Improvement in Maryland

Gr. 2 Unit: Work with Equal Groups of Objects to Gain Foundations for Multiplication

Unit Overview

A student’s knowledge and understanding of the properties of numbers and addition will lay a foundation for their early study of multiplication. In this unit, students develop the foundation for the concept of multiplication through work with equal groups and rectangular arrays. The concept of even and odd will also be crucial with the introduction of division in Grade 3. Even though the Partnership for the Assessment of Readiness for College and Careers (PARCC), has identified this cluster as a “supporting cluster” rather than a “major cluster”, it is still an important part of the content for Grade 2 as it is establishes the groundwork for future grades in the area of multiplication. Therefore, this unit should be thoroughly addressed throughout the school year.

Essential Questions:

  • What is multiplication?
  • How is multiplication related to addition?
  • How are multiplication and addition different?
  • How does our understanding of addition help us make sense of multiplication?
  • How is multiplication used in the real world?
  • In what ways can operations affect numbers?
  • How can different strategies be helpful when solving a problem?
  • Why are some numbers odd and others even?

A question is essential when it stimulates multi-layered inquiry, provokes deep thought and lively discussion, requires students to consider alternatives and justify their reasoning, encourges re-thinking of big ideas, makes meaningful connections with prior learning, and provides students with opportunities to apply problem-solving skills to authentic situations.

Unit Lesson

Additional information such as Teachers Notes, Enduring Understandings,Content Emphasis by Cluster, Focus Standards, Possible Student Outcomes, Essential Skills and Knowledge Statements and Clarifications, and Interdisciplinary Connections can be found in this Lesson Unit.

Available Model Lesson Plans

The lesson plan(s) have been written with specific standards in mind. Each model lesson plan is only a MODEL - one way the lesson could be developed. We have NOT included any references to the timing associated with delivering this model. Each teacher will need to make decisions related ot the timing of the lesson plan based on the learning needs of students in the class. The model lesson plans are designed to generate evidence of student understanding.

This chart indicates one or more lesson plans which have been developed for this unit. Lesson plans are being written and posted on the Curriculum Management System as they are completed. Please check back periodically for additional postings.

CCSC Alignment: 2.OA.C.3

Students will actively use manipulatives, pictures, and symbols to develop an understanding of odd and even numbers and subsequently use the same methods to represent odd and even numbers. They will translate the manipulatives, pictures and symbols into number sentences. Students will use two equal addends in equations to generate even sums.

Available Model Lesson Seeds

The lesson seed(s) have been written with specific standards in mind. These suggested activity/activities are not intended to be prescriptive, exhaustive, or sequential; they simply demonstrate how specific content can be used to help students learn the skills described in the standards. Seeds are designed to give teachers ideas for developing their own activities in order to generate evidence of student understanding.

This chart indicates one or more lesson seeds which have been developed for this unit. Lesson seeds are being written and posted on the Curriculum Management System as they are completed. Please check back periodically for additional postings.

CCSC Alignnment: 2.OA.C.4

Students play a game in which they build and trace rectangular arrays.

CCSC Alignnment: 2.OA.C.4

Students go on a Scavenger Hunt to find each array that matches each of the equations on the Hunt List.