| Category | Format | Size |
|---|---|---|
| Hebei Education Edition First Grade Mathematics Volume 1 | pptx | 6 MB |
"Organization and Review" PPT courseware for subtraction within 20
Description
"Organization and Review" PPT courseware for subtraction within 20
teaching objectives
1. Experience the process of collating, communicating and discussing abdication subtraction tables within 20 through group cooperation.
2. Be able to organize the abdication subtraction formulas within 20 in the subtraction table, and discover the rules in the abdication subtraction table within 20.
3. Actively participate in group cooperation activities and gain successful experience in group cooperation to solve problems.
Group work. Arrange the abdication and subtraction within 20 into a table. Think about it, what rules should be followed?
practice
1. Write two addition equations and two subtraction equations using 9, 8, and 17.
Based on question 1, choose three numbers and try to write four formulas.
2. Look at the diagram and calculate.
3. See who can calculate correctly and quickly.
3 ＋ 4= 6 ＋ 0= 5 ＋ 3＝
4 + 5= 2 + 7= 5 + 5＝
9 - 3= 8 - 2= 4 - 4＝
8-3= 6-6= 10-6＝
7 - 5= 6 + 3= 8 - 5＝
10 - 3= 4 + 3= 3 + 7＝
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File Info
Update Time: 2024-07-01
This template belongs to Mathematics courseware Hebei Education Edition First Grade Mathematics Volume 1 industry PPT template
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