 # Exploring 2-Digit Place Value Unit Plan

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10 x Lessons | Suitable for Grades: K, 1 - 1

This mathematics unit addresses a range of 2-digit place value number concepts involving identifying, sequencing, and representing.

It consists of 10 lessons of approximately 60 minutes duration.

The sequence of lessons and suggested time frames should be regarded as a guide only; teachers should pace lessons in accordance with the individual learning needs of their class.

An assessment task for monitoring student understanding of the unit objectives is included and will require an additional lesson.

### Overview

#### Objectives

• To identify and order the numbers from 0 to 120.
• To sequence the numbers from 0 to 100.
• To introduce skip counting by 2s, 5s, and 10s.
• To explore skip counting by 2s.
• To explore skip counting by 5s.
• To explore skip counting by 10s.
• To understand that 2-digit numbers are made up of tens and ones.
• To understand how 2-digit numbers can be decomposed.
• To identify the basic features of a number line.
• To understand how numbers are placed on a number line.

Prior to starting the unit, develop a number display in the classroom. Display postersword wall vocabulary, and learning goals that the students will engage with throughout the unit to stimulate their learning. For examples of such resources, browse the Place Value category on the Teach Starter website.

There are many concepts to address when introducing 2-digit place value to younger students. The lessons in this unit cover a range of these concepts, many of which have varying degrees of complexity. Teachers are encouraged to select lessons from the unit that best suit the learning needs of their students, or to adapt lessons accordingly.

Some of the resources which accompany this unit plan will need to be prepared prior to teaching. For this reason, it is advised that teachers browse through all lessons before beginning the unit.

### Lessons

#### Let's Count!

A 60-minute lesson in which students will identify and order numbers from 0 to 120.

#### Number Sequences to 100

A 60-minute lesson in which students will sequence the numbers from 0 to 100.

#### Introduction to Skip Counting

A 60-minute lesson in which students will skip count by 2s, 5s, and 10s.

#### Skip Counting by 2s

A 60-minute lesson in which students will explore skip counting by 2s.

#### Skip Counting by 5s

A 60-minute lesson in which students will explore skip counting by 5s.

#### Skip Counting by 10s

A 60-minute lesson in which students will explore skip counting by 10s.

#### 2-Digit Place Value

A 60-minute lesson in which students will understand that 2-digit numbers are made up of tens and ones.

#### Decomposing and Expanding 2-Digit Numbers

A 60-minute lesson in which students will understand how 2-digit numbers can be decomposed.

#### Introduction to Number Lines

A 60-minute lesson in which students will identify the basic features of a number line.

#### Placing Numbers on a Number Line

A 60-minute lesson in which students will understand how numbers are placed on a number line.

#### Assessment - Representing 2-Digit Numbers

An assessment task in which students will demonstrate an understanding of 2-digit place value.

#### Common Core Curriculum alignment

• CCSS.MATH.CONTENT.1.NBT.A.1

Count to 120, starting at any number less than 120. In this range, read and write numerals and represent a number of objects with a written numeral.

• CCSS.MATH.CONTENT.1.NBT.B.2

Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases: