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3rd Grade: Unit 4

Page history last edited by Robbyn Glinsmann 6 years, 8 months ago Saved with comment

 

Unit 4: Problem Solving Builds Number Sense

Target Objectives

Worthwhile Task Indicators

Example Tasks

  • 1.N.2.1
  • 1.N.2.2
  • 1.N.2.3
  • 1.A.1.1

 

 

  • Gives students an understanding of why numbers round to the places they do.

  • Makes a connection between place value and rounding.

  • Provides a visual representation of the concept.

  • Builds upon the number sense they already have

  • Allows students to generalize based on patterns

  • Fosters discussion between peers

Understanding Rounding

  • Show a number line on the board from 0-100. Have students place two digit numbers on the board based on the number line.

  • Ask students why they place the numbers in the spots they do. Example: If I give you the number 73, would the number be placed closer to the 70 or the 80? How do they know?

  • From here, ask students what conclusions they can make when it comes to finding the closer number. (For example: if the second digit is small than it is closer to the smaller tens place).

  • Lead the discussion into creating “rounding rules” and show examples to prove the rule.

  • Give students their own number lines to work with. Have them practice plotting the numbers on the line.

  • Practice using the sentence frame: “I know that ______ is closer to ______ because…”

  • Confirm their answer by saying “I agree because…” or help explain by saying “I disagree because…”

  • Have them practice this with a partner. Allow them to work with 2-digit numbers (number line 0-100) and 3-digit numbers (number line 0-1,000)

  • Have students complete the task https://www.illustrativemathematics.org/content-standards/tasks/1806

  • Click “Student View” to print the task.

OKMath Framework Introduction

3rd Grade Introduction

3rd Grade MAPs

3rd Grade Learning Progression

3rd Grade Objective Analysis

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