Module 8: Round Numbers-Math 2A - Course Guide

Module Overview:

In this module, students will round numbers to the nearest 10, use a number line to round to the nearest 10, round numbers to the nearest 10 in numbers up to 1,000, round to the nearest 10, 100, or 1,000, estimate the sum of an addition sentence, and round the addends of an addition sentence.

Module Materials:

Lesson # Lesson Title Material(s)
1 Round to the Nearest 10 from 0-100 Counter;
2 Rounding to the Nearest 10 from 0-1,000 Round cereal (cheerios);
3 Rounding to the Nearest 100, 1-1,000 Raisins;
4 Round to the Nearest 10, 100, or 1,000 Scissors;
5 Estimate Sums Round cereal (Cheerios);

Module Objectives:

Lesson # Lesson Title Objective(s)
1 Round to the Nearest 10 from 0-100
  1. Round numbers to the nearest 10
  2. Use a number line to round to the nearest 10
2 Rounding to the Nearest 10 from 0-1,000
  1. Round numbers to the nearest 10 in numbers up to 1,000
3 Rounding to the Nearest 100, 1-1,000
  1. Round numbers to the nearest 10 in numbers up to 1,000
4 Round to the Nearest 10, 100, or 1,000
  1. Round to the nearest 10, 100, or 1,000
5 Estimate Sums
  1. Estimate the sum of an addition sentence
  2. Round the addends of an addition sentence

Module Key Words:

Key Words
Round
Number line
Benchmark numbers
Whole tens
Benchmark number
Thousand chart
Estimate

Module Assignments:

Lesson # Lesson Title Page # Assignment Title
1 Round to the Nearest 10 from 0-100 4 Hands-On
2 Rounding to the Nearest 10 from 0-1,000 4 Hands-On
3 Rounding to the Nearest 100, 1-1,000 4 Hands-On
4 Round to the Nearest 10, 100, or 1,000 4 Hands-On
5 Estimate Sums 4 Hands-On

Learning Coach Notes:

Lesson # Lesson Title Notes
1 Round to the Nearest 10 from 0-100 Ask your student to explain to you what rounding is, what a benchmark number is, and how to round using a number line.
2 Rounding to the Nearest 10 from 0-1,000 Ask your student to explain to you benchmark numbers.
3 Rounding to the Nearest 100, 1-1,000 Ask your student to explain to you what they learned about rounding in this lesson.
4 Round to the Nearest 10, 100, or 1,000 Ask your student to describe the tools they have learned about to help them round numbers.
5 Estimate Sums Ask your student to explain how to use estimation when adding numbers.

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
Round to the Nearest 10 from 0-100
  1. What is rounding?
Rounding to the Nearest 10 from 0-1,000
  1. When do we round large numbers?
  2. How do we round using benchmark numbers?
  3. How do we use a number line to round larger numbers?
Rounding to the Nearest 100, 1-1,000
  1. When do we round to the nearest 100?
  2. How can we use a number line and a thousand chart to round?
  3. How do we use a number line with 100s to round?
Round to the Nearest 10, 100, or 1,000
  1. What tools can you use to round numbers?
Estimate Sums
  1. What is estimation?
  2. How are number lines helpful in estimation?

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
Round to the Nearest 10 from 0-100 Round to the Nearest 10 from 0-100
  1. What is rounding?
  2. What are benchmark numbers?
Rounding to the Nearest 10 from 0-1,000 Rounding to the Nearest 10 from 0-1,000
  1. How does Sophia round her measurements for her smoothies?

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