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Lesson Plan Template

  • Grade

  • Subject

  • Section

Second

Math

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  • Competency

Place value (2)

  • Aligned Standards

Number and Operations in Base Ten

  • Strand

2.NBT.B.9

  • Vocabulary

Place Value: The value of the position of a digit in a number.

Round: To change a number to the nearest ten, hundred, etc., usually to make it simpler.

Tens Place: The second digit from the right in a whole number.

Ones Place: The first digit from the right in a whole number.

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Round to the Nearest Ten

Prerequisite Skill

Identify Digits (up to Hundreds Place)

Materials and Preparation

  • Whiteboard and markers
  • Place value charts
  • Number lines
  • Rounding worksheets
  • Homework sheets
  • Exit tickets
  • Assessment worksheets

Learning Objectives

  • Students will be able to identify the place value of digits in numbers.
  • Students will understand and apply the rules of rounding numbers to the nearest ten.

Introduction

Begin the lesson by explaining the concept of place value. Use a place value chart to illustrate the positions of digits in numbers. Introduce the idea of rounding by explaining that it helps simplify numbers, making them easier to work with. Use the example of rounding 29 to the nearest ten. Show how to identify the digit in the tens place and the digit to the right of it.

Explicit Instruction/Teacher modeling

Explain the steps of rounding numbers to the nearest ten:

  1. Identify the digit in the tens place.
  2. Look at the digit to the right (ones place).
  3. If the ones place digit is 5 or higher, round up by adding one to the tens place digit.
  4. If the ones place digit is less than 5, round down by keeping the tens place digit the same.
  5. Replace the ones place digit with zero.

Guided Practice

Work through several examples together as a class, such as rounding 34, 64, and 26 to the nearest ten. Use number lines and place value charts to visually demonstrate the rounding process. Encourage students to ask questions and participate in rounding different numbers.

Independent Practice

Provide students with a worksheet that includes a variety of numbers to round to the nearest ten. Ensure the worksheet includes numbers that round up and round down.

Differentiation

Support

  • Offer additional practice with place value charts.
  • Provide one-on-one or small group instruction for students who need more help.
  • Use manipulatives, such as base-ten blocks, to visualize rounding concepts.

Extension

  • Provide advanced students with numbers to round to the nearest hundred or thousand.
  • Introduce real-life applications of rounding, such as estimating costs while shopping.

Assessment

Use an assessment worksheet to evaluate students' understanding of rounding numbers to the nearest ten. Include a mix of direct rounding questions and applied problems.

Review and closing

Review the key points of rounding numbers. Address common misconceptions, such as confusion about when to round up or down. Ensure clarity by providing additional examples and answering any final questions. Encourage students to share their observations or any remaining curiosities about rounding.

Misconceptions

  • Believing that rounding always involves rounding up.
  • Confusing the tens place with the ones place.
  • Forgetting to change the ones place digit to zero after rounding.
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