"Least Common Multiple" PPT courseware on the meaning and properties of fractions

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"Least Common Multiple" PPT courseware on the meaning and properties of fractions

1. Establish concepts in activities

1. Please ask students whose student ID is a multiple of 4 to stand up and state their student ID. Students whose student IDs are multiples of 6 are asked to stand up and report their student IDs.

2. Question: What did you discover through the activity just now?

3. Question: Why do students with student numbers 12 and 24 stand up twice?

4. Can you find the student number of a student who is both a multiple of 4 and a multiple of 6?

2. Independent exploration and mastering methods

1. If you are given two numbers, can you find a way to find their least common multiple?

2. How to find the least common multiple of 6 and 8?

3. ①Please find the least common multiple of 6 and 8 yourself.

② Share your methods with your classmates.

3. Consolidate practice and improve understanding

1. Find the least common multiple of 8 and 10 using your favorite method.

2. Find the lowest common multiple of each set of numbers below. What did you find?

3 and 6 2 and 8 5 and 6 4 and 9 3 and 9 5 and 10

After students complete the work independently, they can communicate in groups.

To summarize the law of improvement: if two numbers are relatively prime, the least common multiple is their product; if the two numbers are multiples, the larger number is their least common multiple.

3. The least common multiple of two numbers is 12. These two numbers may be ( ) and ( ).

4. Reflect and review, improve understanding

What did you gain from today's study? Do you still have any questions?

5. Assign homework

Homework: Exercise 17 on page 71, questions 1, 2, 3, and 5.

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"Common Multiples and Least Common Multiples" Common Multiples and Common Factors PPT Courseware Teaching Objectives 1. Recognize common multiples and least common multiples, and be able to represent the multiples of two numbers and their common multiples respectively in the set diagram. 2. Able to use enumeration methods to find common multiples of two numbers within 10..

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Update Time: 2024-10-29

This template belongs to Mathematics courseware People's Education Press fifth grade mathematics volume 2 industry PPT template

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