Module 10: Add Two-Digit Numbers-Math 2A - Course Guide

Module Overview:

In this module, students will find the sum with regrouping, use place-value charts to explain addition strategies, explain why addition strategies work, using place value and the properties of operations, and add two-digit numbers without regrouping. They will add two-digit numbers with regrouping and use an addition strategy to add using an input/output box.

Module Materials:

Lesson # Lesson Title Material(s)
1 Add a One-Digit Number to a Two-Digit Number with Regrouping 30 Counters (2 different colors);
2 Rewrite Two-Digit Addition Scissors;
3 Two-Digit Addition Without Regrouping Crayons
Scissors
4 Two-Digit Addition With Regrouping Scissors;
5 Input/Output Tables (Add) None

Module Objectives:

Lesson # Lesson Title Objective(s)
1 Add a One-Digit Number to a Two-Digit Number with Regrouping
  1. Find the sum with regrouping
  2. Use place-value charts to explain addition strategies
2 Rewrite Two-Digit Addition
  1. Explain why addition strategies work, using place value and the properties of operations
3 Two-Digit Addition Without Regrouping
  1. Add two-digit numbers without regrouping
4 Two-Digit Addition With Regrouping
  1. Add two-digit numbers with regrouping
5 Input/Output Tables (Add)
  1. Use an addition strategy to add using an input/output box

Module Key Words:

Key Words
Regroup
Two-digit number
Addend
Sum
Input/output table
Rule

Module Assignments:

Lesson # Lesson Title Page # Assignment Title
1 Add a One-Digit Number to a Two-Digit Number with Regrouping 4 Hands-On
2 Rewrite Two-Digit Addition 4 Hands-On
3 Two-Digit Addition Without Regrouping 4 Hands-On
4 Two-Digit Addition With Regrouping 4 Hands-On
5 Input/Output Tables (Add) 4 Hands-On

Learning Coach Notes:

Lesson # Lesson Title Notes
1 Add a One-Digit Number to a Two-Digit Number with Regrouping Ask your student to explain what they learned in this lesson.
2 Rewrite Two-Digit Addition Ask your student to explain what they learned about adding two two-digit numbers.
3 Two-Digit Addition Without Regrouping Ask your student to explain what they learned about adding two-digit numbers without regrouping.
4 Two-Digit Addition With Regrouping Ask your student to explain how they add two-digit numbers with regrouping.
5 Input/Output Tables (Add) Ask your student to explain what an input/output table is and how to use it.

Module Guiding Questions:

When a student starts a lesson ask them questions to check for prior knowledge and understanding and to review concepts being taught. At the end of the lesson ask the questions again to see if their answer changes.

Lesson Title Question
Add a One-Digit Number to a Two-Digit Number with Regrouping
  1. What is regrouping?
Rewrite Two-Digit Addition
  1. How can we add two two-digit numbers?
Two-Digit Addition Without Regrouping
  1. How can we add without a place-value chart?
Two-Digit Addition With Regrouping
  1. How can we regroup to find the sum?
Input/Output Tables (Add)
  1. When do we use input/output tables?

Module Video Questions:

When a student watches a video take time to ask them questions about what they watched. Suggested questions for the videos in this module are listed here. Suggestion: Have the student watch the entire video first all the way through. Then have them watch the video a second time, as they watch it pause the video and ask the questions.

Lesson Title Video Question

Module Suggested Read Aloud Books:

Take time to read to your student or have them read aloud to you. Read a different book each day. While reading the book point out concepts being taught. You may purchase these books or find them at your local library. Suggested things to discuss while reading the book:

  • What is the main idea?
  • What are three things new you learned?
  • How does this book relate to what you are learning about?

# Book Author Lexile Level

Module Outing:

Take some time to apply what your student is learning to the real world. Suggested outings are below.

# Outing