Lesson 4

Counting On to Add

Est. Class Sessions: 1
X

Mathematical Standards

1.NBT.A
Extend the counting sequence. (1.NBT.A.1)
1.OA.A
Represent and solve problems involving addition and subtraction. (1.OA.A.1, 1.OA.A.2)
1.OA.C
Add and subtract within 20. (1.OA.C.5, 1.OA.C.6)
1.OA.D
Work with addition and subtraction equations. (1.OA.D.7)

Standards for Mathematical Practice

MP2.
Reason quantitatively.
MP4.
Model with mathematics.
MP6.
Attend to precision.

Students play the Counting-On Game and use the counting-on strategy to solve addition problems. Repeated opportunities to use this strategy are provided to help students make it a natural part of their thinking. Counting on from two-digit numbers is introduced.

Content in this Lesson

  • Solving addition problems using a counting-on strategy [E5].
  • Composing and decomposing numbers using counters and number sentences [E1].
  • Connecting different representations of quantities [E4].
  • Representing addition situations with number sentences [E7].
  • Solving word problems involving two whole numbers whose sum is less than or equal to 30 using counters [E6].

Daily Practice and Problems K–L

K. Pennies

L. At the Park

X

Materials for Students

Daily Practice and Problems Lesson Homework Assessment

Student Books

 Student Activity Book

Teacher Resources

 Teacher Guide - digital

Supplies for Students

20 connecting cubes

Supplies for Student Pairs

20 connecting cubes or other counters
large plastic cup
clear plastic spinner or paper clip and pencil

Materials for the Teacher

Unit 4 Assessment Record
connecting cubes
large opaque cup
chart paper
classroom number line (1–130)

Materials Preparation

Gather Materials for Spinners. Students can either overlay clear spinners or use a pencil and a paper clip.

image
Figure 1: Using a pencil and paper clip as a spinner

Prepare Counting-On Game as Optional Targeted Practice. Place copies of the Counting-On Spinners page, clear plastic spinners or paper clips and pencils, large plastic cups, and connecting cubes at a center to provide targeted practice with the countingon strategy. For a more challenging version, provide a deck of cards with 4 each of the numbers 11–20.

Assessment in this Lesson

Assessment Expectation Assessed
Observe
Counting-On Game
Teacher Guide - digital
E1. 
Compose and decompose numbers 1–20 using counters, drawings, ten frames, number lines, diagrams, and number sentences.
E4. 
Connect representations of quantities (e.g., counters, pictures, symbols).
E5. 
Solve addition problems using the counting-on strategy.
E6. 
Solve addition word problems (e.g. adding to, putting together, comparing) involving two or three whole numbers whose sum is less than or equal to 30 using tools (e.g., counters, number lines, calculators, diagrams, ten frames, calendars).
Cube Totals
Student Activity Book
Page 81
E1. 
Compose and decompose numbers 1–20 using counters, drawings, ten frames, number lines, diagrams, and number sentences.
E4. 
Connect representations of quantities (e.g., counters, pictures, symbols).
E5. 
Solve addition problems using the counting-on strategy.
E6. 
Solve addition word problems (e.g., adding to, putting together, comparing) involving two or three whole numbers whose sum is less than or equal to 30 using tools (e.g., counters, number lines, calculators, diagrams, ten frames, calendar).
E7. 
Represent addition situations with stories, drawings, diagrams, counters, number lines, and number sentences.
DPP Item L
At the Park
Teacher Guide - digital
E1. 
Compose and decompose numbers 1–20 using counters, drawings, ten frames, number lines, diagrams, and number sentences.
E3. 
Represent quantities using a ten frame, counters, pictures, number lines, and symbols.

Vocabulary in this Lesson