Exploring Regrouping Subtraction

Exploring Regrouping Subtraction

Learning Objective

At the end of the lesson, you will be able to solve subtraction problems with regrouping using different methods.

Introduce the learning objective of the lesson to the students.

What do you already know about subtraction with regrouping?

Review

Let's start with a quick mental math question. What is 30-8? What do you subtract first? What do you subtract next?

Review subtraction basics with students to prepare for the new lesson.

Interactive Example

Let's explore regrouping subtraction with an example. Based on the image, how many more candies does Little Star have compared to Little Mei? Write the equation. Use either the counting stick or the counter to solve it. Discuss with your partner how you solved it.

Present an interactive example for students to explore regrouping subtraction in a fun way. Encourage students to discuss with their partners to enhance learning.

Regrouping Methods

Let's explore different methods of regrouping subtraction. First, we can use the counting stick. Second, we can use the counter. Third, we can use the vertical method. What are the common steps in these methods?

Introduce different methods of regrouping subtraction and discuss common steps to help students understand the concept better.

Practice

Let's practice what we have learned. Solve 43-27. Work on it individually and I will guide you. Remember to align the digits and start from the ones place. What do you do when you can't subtract in the ones place?

Provide practice exercises for students to apply what they have learned. Guide students through the practice to ensure they understand the concept.

Conclusion

What did you learn today about regrouping subtraction? What method do you prefer? Why? Remember to keep practicing to improve your skills.

Summarize the lesson and encourage students to reflect on what they have learned. Encourage students to continue practicing to improve their skills.

Write down 3 things you learned in this lesson.

Have students enter three things they learned in this lesson. With this they can indicate their own learning efficiency of this lesson.

Write down 2 things you want to know more about.

Here, students enter two things they would like to know more about. This not only increases involvement, but also gives them more ownership.

Ask 1 question about something you haven't quite understood yet.

The students indicate here (in question form) with which part of the material they still have difficulty. For the teacher, this not only provides insight into the extent to which the students understand/master the material, but also a good starting point for the next lesson.