"Line Segments, Straight Lines and Rays" Angle PPT Courseware 3

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"Line Segments, Straight Lines and Rays" Angle PPT Courseware 3

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"Line Segments, Straight Lines and Rays" Angle PPT Courseware 3

learning target

1. Understand line segments, rays and straight lines, and know their differences and connections.

2. Be able to use letters to correctly represent line segments, rays and straight lines.

1. Question: Have you seen similar rays in your daily life?

The light emitted by a flashlight or searchlight can be regarded as a ray.

2. Question: Can you change a line segment into a ray?

3. What are the characteristics of rays?

The ray is straight, has only one endpoint, and can extend infinitely to one end.

Explore the connections and differences between line segments, straight lines and rays

Group collaborative inquiry.

Requirements: (1) Please cooperate in the group to study the connection and difference between line segments, straight lines and rays.

(2) Express the connections and differences between the three in the way you like.

I am a little judge.

1. There is a straight line 5 cm long. ( )

2. A line segment is a part of a straight line. ( )

3. Straight lines are longer than rays, and rays are longer than line segments. ( )

4. Xiaodong drew a 3 cm ray. ( )

Draw rays and straight lines, and understand extreme thoughts

1. Question: Draw rays starting from point O and see who can draw all the rays first.

2. Follow-up question: What conclusion did you draw from this? Countless rays can be drawn through a point.

3. Question: Still at this point, how many straight lines do you think can be drawn through this point? An infinite number of straight lines can be drawn through a point.

Keywords: angle courseware, line segments, straight lines and rays courseware, Western Normal University edition fourth grade mathematics PPT courseware download, fourth grade mathematics slide courseware download, angle PPT courseware download, line segments, straight lines and rays PPT courseware download, .PPT format;

For more information about the PPT courseware "Angle Segments, Lines and Rays", please click on the Angle ppt Line Segments, Lines and Rays ppt tab.

"Line Segments, Straight Lines and Rays" Angle PPT Courseware 2:

"Line Segments, Straight Lines and Rays" Corner PPT Courseware 2 Give it a try: Please connect the description of the figure on the left with the corresponding figure on the right with a line: ① With A as the endpoint, the ray passing through point B ② Connect the two points A and B The line segment ③ is a straight line passing through two points A and B.

"Line Segments, Straight Lines and Rays" Angle PPT courseware:

"Line Segments, Straight Lines and Rays" Corner PPT Courseware One side of the blackboard can be regarded as a line segment, and the line segment has two endpoints. The shortest line segment between two points, the length of the line segment is the distance between the two points. If the two ends of the line segment are extended infinitely, please ask: (1) How many...

File Info

Update Time: 2024-11-21

This template belongs to Mathematics courseware Western Normal University Edition Fourth Grade Mathematics Volume 1 industry PPT template

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"Line Segments, Straight Lines and Rays" Angle PPT Courseware 3
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