| Category | Format | Size |
|---|---|---|
| People's Education Press first grade mathematics volume 2 | pptx | 6 MB |
"Organization and Review" PPT courseware on abdication and subtraction within 20
Description
"Organization and Review" PPT courseware on abdication and subtraction within 20
1. Review old knowledge
Questions: 1. What methods do we use to calculate subtraction within 20?
2. What should you pay attention to when using the Po Shi method?
2. Organize and review, communicate and contact
(1) Organize and review abdication subtraction within 20
1. Work in groups and organize independently.
Question: Who can tell me how you want to organize it?
Tip: Think about how to divide the work and cooperate within the group to organize quickly and well.
2. Report collectively and discover patterns.
Why is there a situation where the latter question is "1" worse than the previous question? (Whether you look at it horizontally or vertically, the results of the calculations are one more "1" than the last or one less "1" than the last.)
(2) Organize review and solve problems
(1) Tell me what information you know.
(2) What do you think about this question?
(3) Who can make a calculation?
3. Assign homework
Homework: Exercise 6 on page 25, question 4. Exercise 6, Question 6, page 26.
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For more information about the PPT courseware "Compilation and review of subtraction within 20", please click the "Compilation and review of subtraction within 20 ppt" ppt tag.
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File Info
Update Time: 2024-07-04
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