"Lianjia" PPT courseware for addition within 20

Description

"Lianjia" PPT courseware for addition within 20

teaching objectives

1. Combined with the problem situation, experience the process of trying to calculate the addition of three numbers and understand the continuous addition formula.

2. Be able to calculate the addition of three numbers using different methods, and be able to perform continuous addition calculations.

3. Understand that different methods can be used to solve problems and gain a successful experience in mathematics learning.

review review

9+5= 9+3= 8+5=

7+6= 9+4= 8+4=

6+9= 9+2= 7+5=

In conclusion

1. The continuous addition of 3 or more numbers is called continuous addition.

2. When calculating the continuous addition formula, calculate in order from left to right. First add the first two numbers, and then add the added number to the third number.

Classroom Application

How many chicks are there in total?

3＋2＋1＝6

practice

1. Let’s see who can count faster.

7+4+6 = 8+7+2 = 7+3+8＝

6+9+4 = 6+8+3 = 4+6+5＝

5＋6＋5 = 2+6+9 = 5＋5＋7＝

2. Send a letter.

3. Ask questions and answer them.

Knowledge and memory

Calculate consecutive addition problems in order from left to right.

You need to count the previous steps and use them for the next steps, and check the correct questions repeatedly.

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For more information about the PPT courseware "Addition within 20 in a row", please click the Addition within 20 ppt tab.

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File Info

Update Time: 2024-09-25

This template belongs to Mathematics courseware Hebei Education Edition First Grade Mathematics Volume 1 industry PPT template

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