Download the motion PPT of the graphic "Cut, Cut"

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Download the motion PPT of the graphic "Cut, Cut"

Part One: Objectives of this Section

By folding and drawing, you can cut out continuous symmetrical patterns.

Through the cut-out graphics, find out the rules and deepen your understanding of translation.

Cut the PPT, the second part: review old knowledge

1. Which fish can overlap with the red fish through translation? Color them.

2. Which of the following pictures is obtained by (1) translation? Put a "√" on the serial number

Cut the PPT, the third part: introducing new lessons

Tell me which paper-cut is an axially symmetrical figure?

Tell me what these are?

initial perception

Today, we are going to use this knowledge to solve problems.

Which of the following phenomena are translations? What are rotations?

Cut the PPT, the fourth part: in-depth exploration

Can you cut out 4 little people holding hands like the one on the right?

What did you know from the question?

Each villain is an axially symmetrical figure.

If you want to cut out 4 identical little people, you can’t cut them yet.

I know how to cut a little person.

I will try to cut two little people holding hands.

When drawing, you need to think carefully about how to avoid cutting out half a little person and still have the cut out little people holding hands.

Here's what I did.

Please note: do not cut the folded part, which is where the body of the villain is connected.

It seems there is more than one way to fold paper, but what should you pay attention to when cutting?

Cut and cut PPT, part 5: Consolidation practice

1. Look carefully at the two groups of little people we cut out holding hands. Is there any hidden symmetry, translation and rotation that we have learned?

2. Take a look in the mirror. What did you find?

3. Which heart shapes can overlap with the yellow heart shapes through translation? Color it.

4. Take a square piece of paper, fold it and cut it as follows. Point out the patterns obtained after unfolding using different shearing methods.

5. There are so many phenomena of symmetry, translation and rotation hidden in the playground. Use your brain. Can you use the knowledge we have learned to design more fun games?

Cut the PPT, part six: summary of this section

01 Cut out several little people holding hands, each of which is an axially symmetrical figure. Also be careful not to cut it.

02. You need to cut out several little people holding hands. When drawing, you need to think carefully about how to make the cut out little people hold hands without cutting out half a little person.

03 If you want to cut out 8 little people holding hands, you need to fold it in half 4 times; to make 16 little people holding hands, you need to fold it in half 5 times.

Cut the PPT, Part 7: Assign homework

1. Complete 3.3 Solving Problems Online - Cut the homework after class.

2. Take a square piece of paper, fold it, and cut it. And talk about the patterns obtained after unfolding different cutting methods.

Keywords: free download of PPT courseware for mathematics in the second volume of the second grade of the People's Education Press, download of cut-and-cut PPT, download of graphic motion PPT, .PPT format;

For more information about the PPT courseware "Motion of Graphics, Cut and Cut", please click on the "Motion of Graphics, Cut and Cut" PPT courseware.

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Update Time: 2024-11-28

This template belongs to Mathematics courseware People's Education Press Second Grade Mathematics Volume 2 industry PPT template

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