The purpose is to explain the concept of perspective and to demonstrate 3 basic examples of perspective drawing.
Target
Dip Ed students
Materials
Powerpoint, ppt file and data projector
Evaluation
Will be evaluated by video and journal
1 Introduction
Your Presenters: Tony works as a consulting engineer, his methods are Physics and ICT. Peter graduated from Fine Arts at RMIT, his methods are double in visual arts.
The purpose of this minilesson is to explain the concept of perspective and to demonstrate 3 basic examples of perspective drawing.
Perspective is a subject that spans the physical sciences and fine arts, the world is a beautiful place.
Parallel lines appear to meet at infinity, on the horizon usually (because the angle subtended is smaller, the further away an object is.)
For example roads, railway lines
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 2.0 Licence
Photo by Valentin Brückel from RailFanEurope.net under Creative Commons
Man made structures are usually made of straight lines.
Perspective is also part of the beauty of nature
Class question: is what you see rays of light radiating from the sun?
1998-2006 Benjamin Crowell, licensed under the " Creative Commons Attribution-ShareAlike license.Photo credits are given at the end of the link
Tell my story of seeing anticrepuscular rays at sunset on Mt Speculation.
The parallel rays at sunset can be even seen to converge on the opposite horizon. They are called anticrepuscular rays.
The world is a beautiful place for mathematicians and fine artists!!
2 Class exercise
What shape is your desk? (draw rectangle, trapezium)
Hold pencil in vertical plane, move parallel to one side of desk, move to other side, you need to rotate your pencil, the two lines converge at the horizon, the “vanishing point”
Hold up paper vertically and sketch.
perspective is a mathematical mapping of a plane onto another plane – there is interesting maths
in perspective drawings, the lines converge at a point called the “vanishing point”
For a 1 point perspective you need a single “vanishing point” and a horizon
Do drawing with whiteboard, class to follow, make frequent eye contact.
Buildings also have parallel lines which appear to converge the further away they are.
Photo by paytonc and uploaded under a Creative Commons license.
They are best drawn with more vanishing points, for example the 2 point perspective.
For a 2 point perspective you need 2 vanishing points and a horizon. The parallel lines are drawn as pointing to vanishing point. The closer you are to the object, the wider the vanishing points are
do drawing with whiteboard
For a 3 point perspective
do drawing with whiteboard
3 In summary
the world is a beautiful place for mathematicians and fine artists!!
perspective is also part of the beauty of nature, also of the built environment
parallel lines appear to converge at infinity
in perspective drawing these points are called vanishing points
there can be 1, 2 or 3 (or more) vanishing points
Analysis
A secondary purpose of this minilesson is to demonstrate team teaching and cross curricular teaching.
Affective benefits (engagement) hopefully through
introducing teachers – personalising it
pretty images
personal anecdote
enthusing and sharing enthusiasm
getting a snappy 2 presenter approach like the dual anchor news presentation
It also provides “hooks” for Gardiner’s Multiple Intelligences (Marsh P107) ,
linguistic - ppt dot points
mathematical
spatial
kinesthetic – class activity
naturalist
Though essentially constructivist, explicit instruction is considered by
making the goals explicit at the beginning
recapping at the end
How it actually went
Feedback
From 15 feedback sheets, 3 said my vocab was too complex and 2 said I spoke too fast. All I guess are valid criticism. I am such a techno-geek I couldnt resist introducing "anticrepuscular rays".
I spoke fast, my presentation of 2.5 minutes was cut back 50% from the material in this blog. When you have material that you like, it is very hard to cut it, and the temptation is to race through. Also how can I show enthusiasm without talking fast?
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