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Design and Modeling
PLTW
| Term | Definition |
|---|---|
| annotation | A note of explanation, a dimension, or a comment added to text, diagrams, or models. |
| constraint | A limit or restriction to a design process. Constraints may be such things as appearance, funding, space, materials, and human capabilities. |
| criteria | Rules or requirements that a design must follow. |
| decision matrix | A tool for systematically ranking options using a set of criteria. |
| documentation | A drawing, photo, video, or text artifact that contains information about a process or instructions for assembling, installing, operating, and servicing. |
| mechanical dissection | Observing the operation of a device and describing its function and design specifications. |
| modification | A change or improvement designed to produce optimal accuracy and function. |
| observation | A remark, statement, or comment based on something one has seen, heard, or noticed. |
| optimal | Describes a design, process, or system that is as effective or functional as possible within the given criteria and constraints. |
| solution | The answer to a problem or opportunity. |
| isometric sketch | A sketch in which an object’s parallel edges are drawn with parallel lines, typically at 30-degree angles to the horizontal baseline. There are no vanishing points and three sides of the object can be seen simultaneously. |
| multiview sketch | A sketch typically including three primary views of an object that are drawn using orthographic projections. The top, front, and right primary views of the object are projected onto a drawing plane perpendicular to each view. |
| orthographic projection | A method of representing views of a three-dimensional object by projecting the visible faces in each view on a two-dimensional plane. |
| perspective sketch | A type of pictorial drawing in which vanishing points are used to provide the depth and distortion that is seen with the human eye. |
| thumbnail sketch | A preliminary visual of a possible idea for a design. Most thumbnail sketches are not full size and have little detail. Their purpose is to help quickly explore possible alternative designs. |
| accuracy | The extent to which a given measurement agrees with the standard value for that measurement. |
| dial caliper | A precision measuring device used to measure linear dimensions, thickness, or diameter. |
| dimension | Measurement in length, width, and depth. |
| precision | The degree to which the correctness of a quantity is expressed. |
| surface area | The total area of the surface of a three-dimensional object. |
| unit- | A specified amount of something measured. Units allow us to use standard measurements. |
| volume | The amount of space, measured in cubic units, that an object or substance fills. |
Created by:
woodallh
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