"Little Pastoral Guard" PPT courseware 3

"Little Pastoral Guard" PPT courseware 3

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"Little Pastoral Guard" PPT courseware 3

Students, do you like birds?

Can you think of them as jungle doctors?

Oriole: 146 caught

Magpies: caught 38 more than orioles

Woodpeckers: 12 fewer caught than orioles

Analyzing the conditions, can you come up with a complete mathematical question?

1. The oriole caught 146 bugs, and the magpie caught 38 more bugs than the oriole.

How many bugs did the magpie catch?

2. The oriole caught 146 bugs, and the woodpecker caught 12 fewer bugs than the oriole.

How many bugs did the woodpecker catch?

The oriole caught 146 bugs, and the magpie caught 38 more bugs than the oriole. How many bugs did the magpie catch?

Read the question carefully and then think about the following questions:

(1) In this question, who is comparing with whom?

(2) Who catches more bugs, the magpie or the oriole? Who caught less?

(3) How much more is there than the less?

(4) What is the relationship between the number of bugs on the oriole table, the number of bugs that magpies catch more than orioles, and the number of bugs that magpies catch?

(5) Can you think of a way for us to intuitively show the relationship between these three quantities?

Talk about gains?

What did you learn?

1. Use addition and subtraction within 10,000 to solve problems

2. More = less + difference

3. Less = more - different

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"Little Pastoral Guard" PPT courseware 2:

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