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Engineering
Representation Unit Overview
Why
are
we
learning
about
engineering representation?
Engineers solve
problems.
They often are expected to communicate their
solution ideas using drawings. Engineering students must be able
to represent their ideas clearly and precisely.
What are some types of
engineering representation?
Isometric Projection
Isometric drawings
represent
three dimensional objects in
two
dimensions. They create an illusion of three dimensions because the x-
y- and z-axes are inclined, respectively, 30, 150, and 90 degrees from
the horizontal.
Orthographic (Multi-View)
Projection
Multi-view projections
allow
for a precise representation of
an object,
with each side drawn perpendicular to the plane of projection.
Normally, only three sides of an object are shown in multi-view
projections: front view, top view, and right side view.
Plan
View
Plan view drawings
represent
the placement of walls, doors, appliances, and other features of a
building or other structure. Plan view drawings are used by
engineers, architects, and construction staff for planning and precise
building instructions.
Will we be able to
create
these engineering drawings in class?
All grade seven students will be able to create both isometric and
multi-view projections with 100% accuracy. Students will also be
able to describe the advantages and disadvantages of each type of
drawing, and explain the proper use of each projection.
Students will also use computer aided drafting software to create a
plan view of a multi-level house. This software allows 3-D
rendering of the home design for a virtual walkthrough in both the
framing and finished views.
Will there be a test?
Students will turn in
a
collection of their best drawings, and will
create brief but complete written explanations of the main ideas of the
unit. Students will be assessed on the precision of their
drawings and the accuracy of their written responses.
Which Massachusetts
learning
standards will we cover?
Science
and
Technology/Engineering Curriculum Framework 2 and 3:
2.2 Demonstrate methods of representing solutions to a design
problem, e.g., sketches, orthographic projections, multi-view drawings.
3.2
Identify and explain the appropriate tools, machines, and electronic
devices (e.g., drawing tools, computer-aided design, and cameras) used
to produce and/or reproduce design solutions (e.g., engineering
drawings, prototypes, and reports).
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