Grade Level |
9th |
Subject Area |
Technology / Engineering Design |
Duration |
Two 70-minute class periods |
Background Knowledge |
- General cell phone proportions and features
- Multi-view drawing
- A multi-view drawing generally contains at least two, but usually three, orthographic views and an isometric view.
- Orthographic drawings are a multi-view drawing of an object, where each view represents two dimensions, and the observer’s viewpoint is perpendicular to the drawing plane. The standard orthographic projection consists of a front, top, and right-side view. Students should begin by drawing the front view, then top and right views. Finally, the students should draw the isometric view (see below). Orthographic views must always be aligned as show in the PowerPoint presentation.
- Isometric drawing is a form of pictorial drawing that is used to show several faces of an object at once, approximately as they appear to the observer. An isometric drawing is not true shape or true size. The sides of an isometric drawing are projected back at an angle of 30 degrees relative to the horizontal axis.
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Author |
Evin Gamal Prather |
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Summary |
Day 1:
Students will be shown the Multi-view Drawing PowerPoint Presentation (egp_cellphone_mvd.ppt).
Day 2:
All students’ cell phones will be collected before the beginning class and the warm-up activity (see Reflections section below for the best way to accomplish this). The students will then be given the warm up (contained in egp_cellphone_h.doc), which consists of a line drawing of a cellular phone that has no numbers or letter on the buttons. Students will be given 5 minutes to fill in the numbers and letters correctly.
The instructor will then verbally instruct the students to model a cell phone as he/she distributes Play Dough to the students. The students will then draw the top, front, and right orthographic views as well as an isometric view of their cell phone on the multi-view paper and turn in the assignment at the end of the class period.
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Objectives |
Students will:
1. Gain experience making visual models of their own designs.
2. Gain experience creating orthographic and isometric drawings from physical objects.
3. Further understand the relationship between orthographic and isometric drawings.
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Ohio Standards |
Science
Math
Technology
- Standard 6 (Design)
- Benchmark A: Identify and produce a product or system using a design process, evaluate the final solution and communicate the findings.
- Grade 9
- Design Process Indicator: Explain and apply the methods and tools of inventive problem-solving to develop and produce a product or system.
- Technical Communication Indicator: Demonstrate knowledge of pictorial and multi-view CAD drawings (e.g., orthographic projection, isometric, oblique, perspective using proper techniques).
- Grade 10
- Design Process Indicator: Select and use simulation in the design process.
- Grade 11
- Understanding Technological Systems Indicator: Explain and use appropriate design processes and techniques to develop or improve products or services in one of the technological systems.
- Grade 12
- Design Process Indicator: Implement the design process: defining a problem; brainstorming, … ,exploring possibilities; selecting an approach,… ; making a model or prototype; …, communicating processes and results, …
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