"Initial Understanding of Corners" PPT

"Initial Understanding of Corners" PPT

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"Initial Understanding of Corners" PPT

Part One: Situation Import

Looking for the corner in life

Today we will learn the preliminary understanding of corners.

Preliminary understanding of angle PPT, the second part of the content: exploring new knowledge

(1) Preliminary understanding of angles

An angle has a vertex and two sides.

Both sides are straight and originate from the vertex.

How many vertices does a corner have? How many edges are there?

There are horns in these items.

(2) Names of each part of the recognition corner

Let’s talk about it: How many vertices does an angle have? How many edges are there?

(3) Compare the sizes of angles

I found that the wider the sides of the horn are spread out, the larger the horn becomes.

When comparing, pay attention to the alignment of the two corner vertices and the alignment of one edge.

The size of the angle has nothing to do with the length of the side.

The size of the horn is related to the size of the opening on both sides.

Preliminary understanding of corners PPT, the third part: Consolidation exercises

1. Point to where the horns are.

2. Which of the following figures are angles and which are not angles?

3. Continuously.

4. Look for it.

Find the right, acute and obtuse angles in the triangle below.

Preliminary understanding of angle PPT, the fourth part: summary

1. What have you gained from studying this course?

2. After class, observe which objects around you have corners on their surfaces and point them out to your friends.

3. Draw what aspects of life you like and share with your classmates why you like them.

Keywords: Free download of second-grade mathematics PPT courseware from People's Education Press, PPT download of preliminary understanding of angles, .PPT format;

For more information about the "Preliminary Understanding of Corners" PPT courseware, please click on the "Preliminary Understanding of Corners" PPT tab.

"Initial Understanding of Angles" PPT (Lesson 3):

"Preliminary Understanding of Corners" PPT (Lesson 3) Part One: Situation Introduction Take out the prepared round paper and start folding the corners, and compete to see who can fold the corners in the most ways. What did you find? In this lesson we will study these angles except right angles. ... ... ... Angular..

"Initial Understanding of Angles" PPT (Lesson 2):

"Preliminary Understanding of Angles" PPT (Lesson 2) Part One: Review Introduction 1. An angle has ( ) vertices and ( ) sides. 2. Determine which of the following shapes are angles. ... ... ... Preliminary understanding of angles PPT, part two: exploring new knowledge 1. Understanding right angles..

"Initial Understanding of Angles" PPT (Lesson 1):

"Preliminary Understanding of Corners" PPT (Lesson 1) Part One: Situation Introduction Students, take a closer look. There are many shapes we have learned on the playground. Do you see them? Today, the teacher is going to introduce you to a new graphic friend, which is the corner. .....

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