Lesson Plan: Two-Digit by Two-Digit Multiplication
Grade Level: 5
Subject: Mathematics
Duration: 30 minutes
Lesson Objectives
By the end of this lesson, students will be able to:
- Understand the process of two-digit by two-digit multiplication.
- Accurately multiply two-digit numbers using the standard algorithm.
- Apply their multiplication skills to solve word problems.
Materials Needed
- Whiteboard and markers
- Multiplication worksheets
- Graph paper
- Pencils
- Erasers
Lesson Outline
Introduction (5 minutes)
-
Engagement Questions:
- Ask students how they would multiply numbers such as 23 and 45.
- Discuss the importance of multiplication in everyday life.
-
Learning Goal:
- Explain that today’s lesson will focus on multiplying two-digit numbers.
Direct Instruction (10 minutes)
-
Introduce the Standard Algorithm:
- Write an example on the whiteboard:
23
× 45
-
Step-by-Step Explanation:
-
Step 1: Multiply the bottom number's ones place (5) by the top number (23):
- 5 × 3 = 15 (write down 5, carry over 1)
- 5 × 2 = 10 + 1 (carry) = 11 (write down 115)
-
Step 2: Multiply the bottom number's tens place (4) by the top number (23) (shift one place to the left):
- 4 × 3 = 12 (write down 2, carry over 1)
- 4 × 2 = 8 + 1 (carry) = 9
- Write down 920 for this step.
-
Step 3: Add the two results:
-
Recap the Steps:
- Monitor understanding while summarizing the method.
Guided Practice (10 minutes)
-
Practice Problems:
- Write the following problems on the board for students to solve with guidance:
-
Support:
- Walk around the classroom, providing help and feedback as students work through the problems.
Independent Practice (5 minutes)
-
Worksheet:
- Ask students to complete a worksheet with the following problems independently:
-
Check for Understanding:
- Ensure students understand the steps before leaving the classroom.
Homework
Assignment
- Complete the following multiplication problems:
- a) 42 × 23
- b) 35 × 17
- c) 29 × 47
- d) 54 × 36
Answers
- a) 42 × 23 = 966
- b) 35 × 17 = 595
- c) 29 × 47 = 1363
- d) 54 × 36 = 1944
Conclusion (Optional)
- Reiterate the steps of the multiplication process. Encourage students to practice at home and remind them that multiplying large numbers becomes easier with practice.
- Answer any final questions before dismissing the class.
This lesson plan meets Canadian educational standards and is structured to facilitate effective learning for Grade 5 students.