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Design and Modeling

PLTW

TermDefinition
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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