Difference between revisions of "Spike Prime - Fractions with Gears"
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| − | [[Image: | + | [[Image:fractions_with_gears_v3_rendered_even_more_slow.png|version 1 - basic|300px]] |
[[Image:fractions_with_gears_v2_rendered_rotated_gearframe_of_v1.png|version 2 - rotated gearframe of v1|300px]] | [[Image:fractions_with_gears_v2_rendered_rotated_gearframe_of_v1.png|version 2 - rotated gearframe of v1|300px]] | ||
| − | [[Image: | + | [[Image:fractions_with_gears_v1_rendered_basic.png|version 3 - even more slow|300px]] |
Pictures: | Pictures: | ||
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== Additional resources == | == Additional resources == | ||
| − | * Download: [http://robotika.sk/spike/ | + | * Download: [http://robotika.sk/spike/spike_math_8_fractions_with_gears.zip Fractions with Gears - all media files] |
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Latest revision as of 11:10, 20 July 2022
Let's begin
Fractions...
Build
Model:
Pictures:
Building instructions:
- Fractions with Gears - version 1 - Basic (PNG)
- Fractions with Gears - version 2 - Rotated Gear Frame of v2 (PNG)
- Fractions with Gears - version 3 - Even More Slow (PNG)
Download building instructions:
- Fractions with Gears v1 - basic (pdf)
- Fractions with Gears v2 - Rotated Gear Frame of v1 (pdf)
- Fractions with Gears v3 - Even More Slow (pdf)
Download stud.io model:
- Fractions with Gears v1 - basic (stud.io)
- Fractions with Gears v1 - Rotated Gear Frame of v1 (stud.io)
- Fractions with Gears v3 - Even More Slow (stud.io)
...description...
Connections:
- motor - B
- light sensor - A
Programs
Download:
...description...
Measure, analyze, think
- Make your own recording
- Perform experiments with your model and discuss in your group what has happened.
Explore and modify
- Pick one of the three versions, build it
- Make your own drawing of the gear systems (i.e. on paper)
- Write down the numbers of teeth on each pair of the gear wheels
- Figure out the ratio of each pair of gear wheels
- Make or calculate your guess about the final ratio of gear wheels
- Perform measurement with the model and program and compare
- Try to invent some other combinations of gears, repeat the whole procedure with them (this can be an alternative project for an advanced group instead of the above)
- Could you list all the possible combinations using these 8 gear wheels that could be built?
Present
- Think about a manual transmission in cars, how does it work? And how does automatic transmission work?
- What do fractions have to do with the car transmission?
- Is it only the speed of rotation that is being changed in the gear box? What else?
Additional resources
- Download: Fractions with Gears - all media files
