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GEARING UP
In the first lesson, students will learn about different gear ratios. They will also design and 3D print their own gearing system. In the second lesson, students will use a simulator to test the various effects on a gearing system’s rotational speed when changing the number of cogs in a gear. Using the simulator, students will design their own 3D gearing system to reduce the rotational speed of a gear by a ratio of 60:1.
Subjects
Mathematics
Design and Technology
Years | Grades
13th Grade | 18-19 years
10th Grade | 14-15 years
11th Grade | 15-16 years
12th Grade | 16-18 years
Duration
Lesson 1: 45 minutes
Print time: ~ 30 minutes
Lesson 2: 45 minutes
gearing up trailer
Play
0:56
Objectives
Extend knowledge of ratios
Use ratio notation, including reduction to the simplest form
Combine gears of differing gear ratios to achieve a desired ratio
Tools and equipment
Introduction video
1 x laptop/computer with mouse and internet access
1 x pen/pencil and planning worksheet
1 x 3D printer and PLA filament
1 x laptop/computer with mouse, internet access and DeeControl layering software for the BE3D eDee 3D printer
3 x demonstration models (STL files provided in lesson materials)
Skill requirements
To participate in the lesson, students should be able to:
Design in TinkerCAD® or similar CAD on a beginner level
Gearing Up Walkthrough
Locked
13:22
3D models overview
Total print time
8 hours 20 minutes
Total filament
20.91 m
Additional non-printable components
Printed all at once
Cogwheels
3 hours 30 minutes
10.67 m
Compound gear system
4 hours 50 minutes
10.24 m
Note: Values are calculated for one set of models.
Lesson resources
Lesson plan
Worksheet
Walkthrough
Walkthrough video
Presentation
3D models
3D print instructions
Curriculum Alignment: ISTE standard compliant
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