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Authoritative PPT Summary
Qingdao edition third grade science volume 2, knowledge in the spring PPT
Part One: Play and Think
Play with toys and think:
1. What toys am I playing with?
2. What is my gameplay?
3. What phenomena occur during play?
4. What are my thoughts on this phenomenon?
How I play: Pull hard with both hands
What I discovered: The tensioner is very flexible
Knowledge PPT in the Spring, Part 2: Conjectures and Plans
Like a spring, when compressed or stretched, a force is generated to return to its original shape. This is elastic force.
My guess:
Items of different materials will (lengthen, flatten, bend...) after being compressed or stretched.
My solution:
Compress or stretch different items and observe the changes in shape.
Spring: shorten/lengthen, return to original shape, elastic
Balloon: Flatten, return to original shape, elastic
Rubber band: lengthens, returns to original shape, elastic
What I discovered: Like a spring, when it is compressed or stretched, it will generate a force to return to its original shape. This is elastic force.
Objects that can produce elasticity include:
Balloons, rubber bands, footballs, car seats, mattresses, bow strings, branches, etc.
Keywords: Qingdao version third grade science PPT courseware for the second volume free download, knowledge in the spring PPT download, .PPT format;
For more information about the PPT courseware "The Knowledge in the Spring", please click the "The Knowledge in the Spring" PPT tab.
"Knowledge in the Spring" PPT courseware:
Qingdao version of the second volume of third-grade science, the knowledge in the spring PPT courseware, the first part of the content: classroom games. Play the game: play with the spring ballpoint pen in your hand. Requirement: Tell me how you play. Share with everyone what you discovered in the game. ... .....