Lesson Plan for Teachers on Subtracting Two-Digit Numbers
Lesson Title:Subtracting Two-Digit Numbers
Lesson Objective: Students will be able to subtract two-digit numbers with regrouping/borrowing.
Materials: Whiteboard, markers, subtraction worksheets, base ten blocks or manipulatives
Introduction: Begin the lesson by reviewing the concept of subtraction. Remind students that subtraction is the process of finding the difference between two numbers. Write the equation “10 – 3 = 7” on the whiteboard and ask students to identify the problem and the solution.
Direct Instruction:
1. Introduce the concept of regrouping/borrowing. Explain that when subtracting two-digit numbers, sometimes we need to borrow from the tens place to make subtraction possible. Use base ten blocks or manipulatives to demonstrate how to borrow.2. Model a subtraction problem on the whiteboard, such as “27 – 8” and demonstrate the process of borrowing and regrouping.
3. Have students complete a worksheet with subtraction problems that require regrouping/borrowing.
Guided Practice:
1. Divide the class into small groups and provide each group with a set of subtraction problems that require regrouping/borrowing.2. Have each student in the group work on one problem at a time, then compare answers with their group members.
3. Walk around the room and assist students as needed.
Independent Practice:
1. Provide each student with a worksheet of subtraction problems that require regrouping/borrowing.2. Allow students to work independently and encourage them to check their work once they are finished.
3. Collect the worksheets for assessment.
Closure:
1. Review the key concepts of the lesson with the class.2. Have students share one thing they learned during the lesson.
3. Provide a homework assignment for students to practice subtraction with regrouping/borrowing.
Assessment:
1. Observe students during independent practice to assess understanding.2. Collect and grade the worksheets completed during independent practice.
3. Give a short quiz at the next class to assess student retention of the material.
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