# Module 4: Take From (up to 20)-Math 2A - Course Guide

## Module Overview:

In this module, students will identify parts of a subtraction sentence, identify pictures that represent given subtraction sentences, and create pictures based on subtraction sentences. They will identify a doubles subtraction fact using doubles addition facts, recognize subtracting doubles as a helpful subtraction strategy, practice subtracting doubles, identify if the missing number in a subtraction sentence is a part or the whole, and find the missing number in a subtraction sentence using a part-part-whole chart. Students will represent the part of a subtraction sentence on a number line, use a number line to find the difference in a subtraction sentence, relate addition and subtraction sentences and recognize fact families as number sentences with the same 3 numbers.

## Module Materials:

Lesson # Lesson Title Material(s)
1 Take Away From (Up to 20) 20 Dixie cups;
2 Subtract Doubles Crayons
25 Counters
Pencil
Paperclip
3 Missing Numbers 20 stackable cubes
Counters
Scissors
4 Subtract on a Number Line 20 unit blocks
Scissors
Colored pencils or crayons
5 Fact Families Scissors
Small tissue box
Glue

Module Objectives:

Lesson # Lesson Title Objective(s)
1 Take Away From (Up to 20)
1. Identify parts of a subtraction sentence
2. Identify pictures that represent given subtraction sentences
3. Create pictures based on subtraction sentences
2 Subtract Doubles
1. Identify a doubles subtraction fact using doubles addition facts
2. Recognize subtracting doubles as a helpful subtraction strategy
3. Practice subtracting doubles
3 Missing Numbers
1. Identify if the missing number in a subtraction sentence is a part or the whole
2. Find the missing number in a subtraction sentence using a part-part-whole chart
4 Subtract on a Number Line
1. Represent the part of a subtraction sentence on a number line
2. Use a number line to find the difference in a subtraction sentence
5 Fact Families
1. Relate addition and subtraction sentences
2. Recognize fact families as number sentences with the same 3 numbers

Module Key Words:

Key Words
Subtraction sentence
Part
Whole
Difference
Doubles
Doubles subtraction strategy
Part-part-whole chart
Number line
Parts
Inverse operation
Fact family

Module Assignments:

Lesson # Lesson Title Page # Assignment Title
1 Take Away From (Up to 20) 4 Hands-On
1 Take Away From (Up to 20) 5 Write It Out!
2 Subtract Doubles 4 Hands-On
2 Subtract Doubles 5 Write It Out!
3 Missing Numbers 4 Hands-On
3 Missing Numbers 5 Write It Out!
4 Subtract on a Number Line 5 Write It Out!
5 Fact Families 4 It’s Your Turn!

## Learning Coach Notes:

Lesson # Lesson Title Notes
1 Take Away From (Up to 20) Ask your student to describe to you how to write subtraction sentences.
2 Subtract Doubles Ask your student to explain how they can use doubles addition facts to help them subtract.
3 Missing Numbers
• In this lesson, the "Find the Missing Whole While Adding" Worksheet is a cut-out. If your student has a workbook, they can find this worksheet in the cut-out section located in the Table of Contents of the workbook.
• Have your student describe to you how to find the missing number in a subtraction sentence.
4 Subtract on a Number Line Have your student describe to you how to use a number line to help them subtract.
5 Fact Families The Fact Families worksheet in this lesson is a cut-out. If your student has a workbook, this worksheet will be found in the cut-out section in the Table of Contents of the workbook. In their Math Notebook, have your student explain what inverse operations are and how they relate to addition and subtraction.

## 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
Take Away From (Up to 20)
1. How do we write subtraction sentences?
Subtract Doubles
1. How can we use addition doubles facts to help us subtract?
Missing Numbers
1. How do you subtract when a number is missing?
Subtract on a Number Line
1. How can you use a number line to help you subtract?
Fact Families
1. What are inverse operations?
2. What is a fact family?

## 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
Take Away From (Up to 20) Identifying Subtraction Sentences
1. How do we write subtraction sentences?
Subtract Doubles Subtracting Doubles
1. How can we use addition doubles facts to help us subtract?
Missing Numbers Subtracting with a Missing Number
1. How do you subtract when a number is missing?
Subtract on a Number Line Subtracting on a Number Line
1. How can you use a number line to help you subtract?

## 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