| Category | Format | Size |
|---|---|---|
| People's Education Press fourth grade mathematics volume 2 | pptx | 6 MB |
"The Significance of Addition and Subtraction and the Relationship between Each Part" Four Arithmetic Operations PPT Courseware
Description
"The Significance of Addition and Subtraction and the Relationship between Each Part" Four Arithmetic Operations PPT Courseware
1. Situation introduction
A train goes from Xining to Lhasa via Golmud. The railway from Xining to Golmud is 814km long, and the railway from Golmud to Lhasa is 1,142km long. How many kilometers is the railway from Xining to Lhasa?
Questions: 1. Read the question, what do you know? (Given the distance from Xining to Golmud and the distance from Golmud to Lhasa, the distance from Xining to Lhasa is required.)
2. Use line segment diagrams to represent the quantitative relationships in the question.
2. Explore the rules and clarify the meaning
(1) Understand the meaning of the question
Questions: 1. Tell me how you draw a line segment graph.
2. How is "the railway director from Xining to Lhasa" represented on the map?
3. How many kilometers is the railway from Xining to Lhasa and what method should be used? what are you thinking?
(2) Clarify the meaning of subtraction
Question: ① Read the question, what do you know? (Given the distance from Xining to Lhasa and the distance from Xining to Golmud, we need the distance from Golmud to Lhasa.)
② How many kilometers is the railway from Golmud to Lhasa and what method should be used? what are you thinking?
3. Consolidate new knowledge
1. According to 2468 + 575 = 3043, directly write the results of the following two questions.
3043-2468＝ 3043-575＝
Question: Tell me what you base your results on.
2. Write two other equations based on the relationship between the parts of addition and subtraction.
4. Assign homework
Homework: Exercise 1 on page 4, questions 4 and 5.
Keywords: Four Arithmetic Operations courseware, New People's Education Edition fourth-grade mathematics volume PPT courseware, fourth-grade mathematics slide courseware download, Four Arithmetic Operations PPT courseware download, .ppt format
For more information about the PPT courseware "The Meaning of Addition and Subtraction and the Relationship between Each Part and the Four Arithmetic Operations", please click the "The Meaning of Addition and Subtraction and the Relationship between Each Part of the Four Arithmetic Operations" ppt tag.
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Update Time: 2024-07-08
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