Sample 4

Prescribed Learning Outcomes:

Design and Communication (Principles and Concepts of Technology)

It is expected that students will:

• describe representation and modelling techniques used to develop design solutions, proposals, and plans
• synthesize knowledge and concepts from other disciplines and the community in the design process
• assess how design reflects society, culture, and the environment

Design and Communication (Modification and Manipulation)

It is expected that students will:

• design products and systems and select appropriate materials and components to reflect specified design criteria, including:
  • method of production
  • cost
  • aesthetics
  • function
  • environmental considerations
• use appropriate tools and equipment to develop and present design ideas, including:
  • manual drafting
  • CADD
  • computer animation or simulation
  • video and audio production
  • models
• produce working drawings that incorporate recognized standards

Overview

• designs
• scale models

Planning for Assessment and Evaluation

• The teacher showed the class a videotape of an earthquake and its aftermath. Afterward, the teacher initiated a discussion about relief agencies that provide emergency shelters for families after natural disasters.

• Students then worked in teams to design and construct 1:10 scale models of emergency shelters that would meet the following user requirements:
  • large enough to accommodate four to six adults
  • constructed from sections that can be fitted together easily or are in fold-down assembly form
  • protects the occupants from wind, rain, and sub-zero temperatures

• Each group also produced a design portfolio that included:
  • descriptions and initial sketches of several design options, with reasons for rejected alternatives
  • evidence of developmental work
  • detailed manual or CADD scale drawings of the group´s selected design, including a three-view drawing using orthographic projection, a rendered pictorial drawing using two-point perspective, a detail drawing showing a joint used in the structure, and an exploded view showing how to assemble the structure
  • an evaluation of the overall project, including self-criticism where appropriate, detailed reasons for the success of the project, or detailed suggestions for modifications and alterations to improve it

• After doing the design work, each team produced a realistic, three-dimensional 1:10 scale model that clearly demonstrated the assembly process.

• At the end of the activity, the finished models were displayed and were then evaluated by the teacher, peers, and other interested staff members. The design portfolios were handed in and were also evaluated by the teacher and peers.

Defining the Criteria

To what extent is the group able to:

• frame a well-developed design brief with detailed specifications
• present research that is comprehensive, well organized, and well documented
• generate several possible design solutions that meet the design specifications
• produce high-quality drawings that detail the final design, incorporating sufficient detail and information to permit manufacture of the product
• provide evidence of project planning in the form of written procedures and flow charts
• complete a detailed evaluation of the product that is relevant, concise, and objective and that addresses issues such as cost, function, environmental impact, and method of production

Scale Model

To what extent does the model exhibit:

• high-quality design features
• high-quality construction techniques
• high-quality finishing techniques
• satisfaction of design criteria

Assessing and Evaluating Student Performance

Assessment of the design process was based on teacher observations and teacher and peer assessment of the design portfolios.

Scale Model

Each group´s model was evaluated by the teacher and peers. Teacher and peer evaluations were averaged to arrive at a final grade.

Scale Model

Criteria	Rating
	Excellent	Good	Fair	Poor
quality of construction
quality of design features
quality of finish
extent to which the model meets the design criteria

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