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Authoritative PPT Summary
"Problem Solving" Hybrid Operation PPT Courseware
1. Review old knowledge
Oral calculation.
(30-20)÷5＝65-8×5＝72÷（18-9）＝ 20＋7×5＝
Question: What counts first? What else?
2. Explore new knowledge
(1) Observe carefully and collect information
Questions: 1. Looking carefully, what do you know?
2. Who can fully explain the meaning of this question?
3. Will you solve the request of "how many times do you need to bake the leftovers"?
(2) Try to solve and understand the method
Questions: 1. What should be calculated first in the comprehensive equation? Which part of the picture are you looking for?
2. What do you need to know when asked to "bake the leftovers a few more times"?
3. Which of the two in the question tells us? Who didn’t tell us?
3. Consolidate practice
Questions: 1. What do you know?
2. I want to ask "How many animals are placed in each cage on average?" Can you answer it? Please write it.
3. Tell me how you did it, and you can also use drawings to help explain.
4. Why do we need to ask "how many rabbits are there in total" first?
5. Is the answer correct? How did you know?
4. Classwork
Homework: Exercise 12 on page 55, questions 2 and 3. Exercise 12 on page 56, question 5.
Keywords: Mixed operations courseware, problem-solving courseware, New People's Education Edition second-grade mathematics PPT courseware, second-grade mathematics slide courseware download, mixed operations PPT courseware download, problem-solving PPT courseware download, .ppt format
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