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CURRICULUM
COMPONENT: SCIENCE AND TECHNOLOGY
SUBJECT: TECHNOLOGY
STAGE: TWO
PROPOSED UNIT
NUMBER: 8422
BRIEF DESCRIPTION:
This unit introduces students to the principles of machines, their mechanical elements and the ways in which they can be applied to produce movement. The aims of the unit will be achieved by an investigation of the types and characteristics of simple machines and by the planning and construction of models to solve a specific problem.
RATIONALE AND GENERAL AIMS:
There is an evident need for modern technology to be incorporated into teaching programmes so that students become familiar with a broad range of technological applications. Also there is a need to recognise society's increasing dependence upon aspects of high technology.
Familiarity with process and application of new technology will allow students to become aware of and respond to, new occupational demands. Initially students should be exposed to the basic aspects of machines and machine control then move to an in-depth study of specific control technigues. This rationale has led to the development of a series of units which progress from simple aspects of machine technology to complex machine/computer interfacing.
This unit aims to develop in the student:
o an awareness of safe working habits
o a knowledge of machines and machine groupings
o a knowledge of factors which affect the functioning of machines
o an understanding of the general application of machines
o an ability to use and apply knowledge in a practical situation
o an appreciation of the impact of technology on modern society
o an abdlity to communicate and compile reports of activities undertaken
An integral part of the course is the development of both literacy and numeracy skills. Students are expected to collect, record and process data, and write and present reports.
SPECIFIC OBJECTIVES
Knowledge and Process
Students will be able to:
o recall safe working practices
o describe the function of specific machines
o compare mechanical efficiency of several machine elements
o recall elementary facts in the history of the development of mechanical devices o recall mechanical terms
o explain the three lever types and their efficiency o define the phenomenon of friction o describe the application of gears, belts, pulleys, chains and universal joints in machine construction o justify the selection of mechanical components in the development of a working model
Practical
The student will:
o demonstrate an understanding of safe working practices
o alter structures to improve rigidity and mobility
o apply levers to structures
o use friction for resisting movement
o overcome friction in moveable structures
o use a universal joint to alter the focus of rotation
o use gears to obtain movement
o compare chains with belt drives
o use pulleys to obtain lift
o demonstrate means of varying the direction of movement by the use of machines
o apply methods of construction to give machines linear movement
o demonstrate means of controlling movement in a single plane
o solve simple mechanical problems
o complete a folio of work
Attitudes
The student will:
o appreciate the need for adopting correct safety procedures
o appreciate the need to adequately maintain equipment o be aware of the need for co-operation in group activity o develop a careful, deliberate and thorough approach to practical activity o show interest in extending knowledge
TEACHING LEARNING PROGRAMME
Robotics 2.2 is a student centred learning programme with an emphasis on practical activity.
The programme should include the design and development of a model which applies the theoretical concepts of machine type and action.
The student should:
o investigate the application of simple machines
o design and construct a model using simple machines
o use the model to show the advantages of machine application o evaluate the effectiveness of the model present a report on the model constructed
Other activities which supplement the programme should include:
o compiling a glossary of terms
o writing a sequence of steps taken in the construction of a model
o justify the machine types used in the construction of the model
o analyse an existing machine o sketch mechanical components
Students should experience theoretical and practical work in group activities as well as in individualised projects. An emphasis should be placed upon visits in the community to reinforce aspects of machine applications.
10 ASSESSMENT AND GRADING
1 Structure of assessment
Learning Outcomes Weighting
Knowledge 30-40%
Process and Sensori motor 40-60% Affective 10-15%
2 Methods of assessment
o Individual performance
o performance in group activity
o model construction
o written documentation
o graphical representations
o calculations
o practical, oral and written tests
At the completion of the unit, students will be assigned a grade of A - D, F on the basis of Grade Related Descriptors.
11 RESOURCES NEEDED TO SUPPORT THIS UNIT
It is desirable that a practical room be available as construction of models is an integral part of the course,
Allied to individual model construction is the recommendation that Lego 1030 "Simple Machines" kits (or similar) be purchased. Text materials are available to support these kits.
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