Lesson 2

Strategies for Making Tens

Est. Class Sessions: 2
X

Mathematical Standards

3.NBT.A
Use place value understanding and properties of operations to perform multi-digit arithmetic. (3.NBT.A.2)

Standards for Mathematical Practice

MP2.
Reason quantitatively.
MP3.
Construct viable arguments and critique the reasoning of others.
MP5.
Use appropriate tools strategically.
MP6.
Attend to precision.
MP8.
Look for and express regularity in repeated reasoning.

Students review addition facts strategies and use them to solve problems with more than two addends. Students develop mental math strategies that apply the properties of addition (e.g., using tens and making tens).

Content in this Lesson

  • Recognizing that the equal sign represents the relationship between two equal quantities [E4].
  • Using strategies that apply the properties of addition to solve addition problems (e.g., making tens, using tens, thinking addition, using doubles) [E5].
  • Choosing appropriate strategies [MPE2].
  • Communicating a strategy and reasoning, verbally and in writing [MPE2 and MPE5].
  • Developing mental math strategies for addition [E5].
X

Materials for Students

Daily Practice and Problems Lesson Homework Assessment

Student Books

 Student Guide
Student Activity Book

Teacher Resources

 Teacher Guide - digital

Supplies for Students or Student Pairs

40 connecting cubes
calculators

Materials for the Teacher

Display of Math Practices page (Student Guide) Reference
Unit 2 Assessment Record

Assessment in this Lesson

Assessment Expectation Assessed Math Practices Expectations Assessed

Making Tens to Add
with Feedback Box
Teacher Guide - digital
E4.
Recognize that the equal sign represents the relationship between two equal quantities.
E5.
Use strategies that apply the properties of addition to solve addition problems (e.g., making tens, using tens, thinking addition, using doubles).
MPE2.
Find a strategy. I choose good tools and an efficient strategy for solving the problem.
MPE5.
Show my work. I show or tell how I arrived at my answer so someone else can understand my thinking.

DPP Item H
Find the Missing
Numbers
Teacher Guide - digital
E4.
Recognize that the equal sign represents the relationship between two equal quantities.
E5.
Use strategies that apply the properties of addition to solve addition problems (e.g., making tens, using tens, thinking addition, using doubles).