School Improvement in Maryland

Gr. PK Unit: Compare Quantities

Unit Overview

This unit builds on a student’s understanding of counting and number. In it, the student compares groups of objects, first up to 5 and then up to 10 in each group. Their task is to determine which has more, or is greater, which has less, or if they are equal in number. Students will use matching and counting strategies in this unit. They will incorporate the use of five and/or ten frames, concrete or virtual manipulatives, pictures, and numbers. Students will match numbers to the sets to justify their comparisons.

Essential Questions:

  • What do numbers convey? (identify amount – cardinal; name position – ordinal; indicated location – nominal)
  • How can numbers be expressed, ordered, and compared?
  • What are different ways to compare groups of objects? (matching, counting each group)
  • What are efficient ways to count? (count up or back) from largest number, count sets of items, count to/using landmark numbers)

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: PK.CC.C.7

Students use manipulatives to build sets of objects and then compare the sets to determine which has more, less, or the same amount as the other set.

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: PK.CC.7

Students use plastic fruit to make sets that match the quantity of the teacher’s set. Students use one-to-one correspondence to compare their sets with that of the teacher and other students.

CCSC Alignnment: PK.CC.7

Students use counters to build sets of five or less and determine who has more.

CCSC Alignnment: PK.CC.7

Students compare sets of small and large objects to develop an understanding that quantity determines which has more in between two sets rather than the size of the objects in the set.

CCSC Alignnment: PK.CC.7

Students work with a partner to compare sets of objects simply by looking at them to determine if they are equal. Students explain their thinking and prove their responses using one-to-one correspondence.