Lesson Plan: Place Value and Expanding Numbers
Subject: Mathematics
Grade Level: 2
Duration: 30 Minutes
Lesson Objectives
By the end of this lesson, students will be able to:
- Understand the concept of place value.
- Identify the value of each digit in a multi-digit number.
- Expand multi-digit numbers using place value.
Materials Needed
- Whiteboard and markers
- Place value chart
- Base-ten blocks (optional)
- Worksheets for practice
- Homework assignments
Lesson Outline
Introduction (5 minutes)
- Begin with a brief review of what numbers are and how they are used in everyday life.
- Introduce the term "place value." Explain that the position of a digit in a number determines its value.
- Example: In the number 345, the digit '3' is in the hundreds place, which means it represents 300.
Direct Instruction (10 minutes)
-
Place Value Explanation
- Write a three-digit number (e.g., 452) on the whiteboard.
- Break down the number by identifying the place value of each digit:
- 4 is in the hundreds place (4 x 100)
- 5 is in the tens place (5 x 10)
- 2 is in the ones place (2 x 1)
- Demonstrate using a place value chart.
-
Expanding Numbers
- Explain how to expand a number using its place value.
- Show the expanded form of 452:
- Provide multiple examples, allowing students to practice reading and expanding numbers.
Guided Practice (5 minutes)
- Distribute a few practice problems on a worksheet.
- Problems could include expanding numbers such as:
- 213
- 564
- 789
- Encourage students to work in pairs to complete these examples on their worksheets.
Independent Practice (5 minutes)
- Have students complete a few more problems on their own.
- Problems could include:
- 325
- 436
- 890
- Walk around the room to monitor progress and provide assistance as needed.
Conclusion (5 minutes)
- Review the key concepts covered in the lesson.
- Ask students to share one thing they learned about place value and expanding numbers.
- Emphasize the importance of understanding place value in mathematics.
Homework Assignment
Tasks:
-
Expand the following numbers:
-
Write the following numbers in standard form:
- a) 400 + 20 + 3
- b) 700 + 60 + 9
- c) 500 + 80 + 1
Correct Answers:
-
Expanding Numbers:
- a) 245 = 200 + 40 + 5
- b) 613 = 600 + 10 + 3
- c) 802 = 800 + 0 + 2
-
Standard Form:
- a) 400 + 20 + 3 = 423
- b) 700 + 60 + 9 = 769
- c) 500 + 80 + 1 = 581
This lesson plan covers essential components of teaching place value and expanding numbers while being adaptable to the Canadian educational standards. Make use of visual aids and encourage active participation to enhance understanding!