"Building Blocks" Addition and Subtraction PPT

Description

"Building Blocks" Addition and Subtraction PPT

Part One: Classroom Introduction

1. Use counters and sticks to correctly indicate the number of objects within 20.

2. Master the calculation methods of addition without carry and subtraction without carry within 20.

3. Cultivate the ability of hands-on operation and mental arithmetic.

[Heavy and difficult points] Master the calculation methods of addition without carry and subtraction without carry within 20.

Building blocks PPT, part 2: exploration of new knowledge

Have you ever played with building blocks?

Count how many bricks there are?

think about it

How many bricks are left?

Can you understand the following steps?

PPT on building blocks, part three: classroom exercises

I'll move it and you'll do the math.

19-3=16

13+4=17

Fill it out

Building Blocks PPT, Part 4: Class Summary

1. Addition without carry - add the numbers in the ones place.

2. Subtraction without backing up - subtract the numbers in the units digit.

Building Blocks PPT, Part 5: Classwork

Do the math

19-7= 13+5= 16-3= 15+3=

12+6= 5+13= 16-4= 15+4=

Which two numbers add up to 18? Fill in the equation.

Tell me what results you can get?

3+5=8

3+2=5

2+5=7

3+5=8

Keywords: Beijing Normal University edition first grade mathematics PPT courseware free download, building blocks PPT download, addition and subtraction PPT download, .PPT format;

For more information about the "Addition and Subtraction Building Blocks" PPT courseware, please click the Addition and Subtraction PPT Building Blocks PPT tab.

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"Building Blocks" Addition and Subtraction PPT Download Part One: Exciting Introduction How many blocks were used in total? 13+2=15 Knowledge explanation 13+2=15 First calculate 3+2=5. Then calculate 10+5=15. What else can you think about? Because 3+2=5. So 13+2=15. ... ... ....

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Update Time: 2024-11-14

This template belongs to Mathematics courseware Beijing Normal University Edition First Grade Mathematics Volume 1 industry PPT template

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