"Mixed Operations with Parentheses" Mixed Operations PPT Courseware

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"Mixed Operations with Parentheses" Mixed Operations PPT Courseware

1. Introduction of excitement

State the order of operations for each question and calculate.

Questions: 1. What are the similarities and differences between the upper and lower questions in each group?

2. Why are the numbers the same, the operation symbols the same, but the order of operations different?

Summary: When we were in first grade, we knew that there are parentheses in a calculation, and we must first calculate what is inside the parentheses. Similarly, in mixed operations, if there are parentheses in a calculation, we need to calculate what is inside the parentheses first.

2. Explore new knowledge

(1) Independently try mixed operations with parentheses

Question: Can you do the above question using the off-style method?

(2) Feedback communication, the order of operations of calculations with parentheses

Question: 1. How did you calculate these two questions?

2. What to count first? What else?

3. In a mixed calculation with parentheses, what order of operations should be followed?

3. Consolidate practice

(1) Calculation

Question: 1. What are the similarities between these 6 questions?

2. What is the order of operations for calculations with parentheses?

(2) Tell the order of operations of each question and calculate

Question: What are the similarities and differences between the upper and lower questions in each group?

Summary: If there are parentheses in the calculation, you must first calculate what is inside the parentheses.

4. Classwork

Homework: Exercise 11 on page 51, question 7. Exercise 11 on page 52, question 11.

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Update Time: 2024-11-22

This template belongs to Mathematics courseware People's Education Press Second Grade Mathematics Volume 2 industry PPT template

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