Module 19 - Math 1B - Course Guide


Module Overview:

In this module, students will be introduced how to add a two-digit number to a one-digit number. Students will compare two-digit numbers less than 21. Students will add 2 two-digit numbers with regrouping. Students will add 4 1-digit numbers. Students will solve word problems using subtraction.


Module Materials:

  • Pencils
  • Crayons or colored pencils
  • Notebook
  • Scissors
  • Glue
  • Highlighter
  • Markers
  • Blank paper

Module Objectives:

Lesson # Lesson Title Objective(s)
1 19.1 Introducing Two Digits
  1. Add a two-digit number to a one-digit number.
2 19.2 Comparing Two-Digit Numbers
  1. Compare 2 two-digit numbers (less than 21).
3 19.3 Two-Digit Addition
  1. Add 2 two-digit numbers with regrouping.
4 19.4 Adding 4 Numbers
  1. Add 4 one-digit numbers.
5 19.5 Word Problems I
  1. Solve word problems using subtraction.

Module Key Words:

Key Words
two-digit
addition
no-regrouping
compare
addition with regrouping
one-digit numbers
word problems
subtraction

Module Assignments:

Lesson # Lesson Title Page # Assignment Title
1 19.1 Introducing Two Digits 4 Come to My Sea
2 19.2 Comparing Two-Digit Numbers 4 Zoo Report
3 19.3 Two-Digit Addition 4 Zoo Report II
4 19.4 Adding 4 Numbers 2 Feed the Animals
4 19.4 Adding 4 Numbers 4 It's Lunchtime
5 19.5 Word Problems I 4 Sport Stuff


Learning Coach Notes:

Lesson # Lesson Title Notes
1 19.1 Introducing Two Digits Write 10 2- digit numbers on index cards (one number on each card) and the numbers 0 to 9 on index cards (one number on each card). Put the 2-digit cards in one pile face down and the single-digit cards in another pile face down. Have your student flip up one card from the 2-digit pile and 1 from the single-digit pile. Have them add the two numbers writing the addition problem in their Math notebook.
2 19.2 Comparing Two-Digit Numbers Please take out the index cards and write numbers 0 to 20 on them (1 number on each card). Mix them up and put them in two piles. Have your student flip over two cards at a time and tell which number is greater than the other.
3 19.3 Two-Digit Addition Have your student practice adding two-digit numbers using a dry erase board. Give your student two sets of two-digit numbers for them to add, have them write the addition problem on their dry erase board, and solve the problem. Have them explain how they solved the problem. Continue by giving them at least 5 more addition problems.
4 19.4 Adding 4 Numbers Please note: On the "Feed Me" worksheet, there are no right or wrong answers. This activity allows the student to decompose the number into four numbers that will equal the total number when combined. For example, there are 13 bananas. Your student may do 10 + 0 + 2 + 1 or 3 + 4 + 4 + 2... etc.
5 19.5 Word Problems I Work with your student to create subtraction story problems and solve them.

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
19.1 Introducing Two Digits
  1. How do you add a two-digit number to a one-digit number?
19.2 Comparing Two-Digit Numbers
  1. How can you tell which number is greater?
19.3 Two-Digit Addition
  1. How can you add two-digit numbers?
19.4 Adding 4 Numbers
  1. How can you add 4 numbers together?
19.5 Word Problems I
  1. What are key words in a word problem that tell you to subtract?

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
19.1 Introducing Two Digits Numbers by the Sea
  1. What is 14 + 4?
  2. What is 11+8?
  3. What is 13+2?
  4. What is 10+7?
  5. What is 13+4?
19.2 Comparing Two-Digit Numbers Number Safari
  1. What was the lesser number on the numberaffes?
  2. What was the greater number on the numberebras?
  3. What is the lesser number on the numberetahs?
  4. What was the greater number on the numberangutans?
  5. What is the greater number on the numberingos?
19.3 Two-Digit Addition Add That
  1. How can you add two-digit numbers?
19.5 Word Problems I Staying on Track
  1. What were the subtraction problems you solved in this video?

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