Transcript Teacher Training - Day 3
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Design and Discovery Electronics Wednesday May 6th 2006 Drumcondra Education Centre
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Session 5 Making Machines and Observing Functionality.
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Session 5: Making Machines
Understanding the session: Exploration of the mechanics of simple machines, this is achieved through a practical based lesson where the student will build different types of “toys” using basic mechanics.
Activity A Film Canister Kit Activity B Lego Buggy
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Activity 5A: Rolling Kit
Challenge!!
Make a “Rolling toy which can travel 1-1.5 metres Goal: To allow students to become more familiar with the ideas behind basic mechanics, how energy can be stored, transferred and transformed.
Preparation: To do this you will need “One Rolling Kit” per student • • • • Materials required: 1 film canister with lid, with holes(8mm ends – 10mm Ø) drilled in both 2 Rubber bands 6.5cm
2 small washers 1 piece of thick drinking straw
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Building The “Rolling Kit” Play the video
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Simple Machines
Opportunity to introduce key concepts Potential Energy Kinetic Energy Conversion of Energy Friction Simple Machines
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Simple Machines
What is a machine?
Lever Wedge Wheel and axle Inclined Plane Screw Pulley
Uses a mechanism
Gears Linkages Cam and Follower http://www.cosi.org/files/Flash/simpMach/sm1.html
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Simple Movements
•Rotary •Oscillating •Linear •Reciprocating
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Build the Lego Buggy
Ireland Material Class & Properties Education In this session the student learns about
Material Classes composites – metals, ceramics, polymers and
The Properties of Materials – strength, density, ductility, electrical and thermal conductivity, optical properties
Material Applications
–
what are they used for?
Material Choice – what are the best materials to use?
Do Materials Matter? – environmental impact and cost
Ireland DESIGN AND DISCOVERY PLANNER Education Session No. (3x40 mins) Topic
Notes and Comments
7 8 9 10 1 2 3 4 5 6 11 12 13 Dates to Remember Jump Into The Designed World I Jump Into The Designed World II Material Science Electronic Engineering I Electronic Engineering II Making Machines and Observing Functionality Robotics The 3 R’s Of Problem Identification A Solution Taking Shape Project Analysis and Planning for Models Making It! Models, Trials and Tests Prototype Practicalities Prototype Review and Presentation Transition Year Evening/Science Fair Young Scientist & Technology Exhibition ( www.btyoungscientist.ie
) * __ weeks to exhibition * __ weeks to exhibition * __ weeks to exhibition * __ weeks to exhibition * __ weeks to exhibition * __ weeks to exhibition
Date Started Date Completed
Date Date
Ireland Education Seven Tests 1 2 3 4 5 6 7 Density Ductibility vs Brittleness Strength Fatigue Electrical Conductivity Thermal Conductivity Optical Properties Students learn how to differentiate and select materials based on their properties
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Design Tools
• 10 Stage Design Process • The 3 R’s Revisit, Research, Refine • SCAMPER • PAPA • Communication of ideas Sketches Working Drawings • Design Brief
10 Improve your solution. Test, evaluate, and Revisit THE DESIGN PROCESS 1 Identify a design opportunity 9 Build the prototype 2 Research the design opportunity 3 Brainstorm possible solutions to the problem 8 Build models and component parts 4 Write a design brief 7 Prepare design requirements and conceptual drawings 6 Refine your solution 5 Research your solution
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SCAMPER
Education
• Substitute • Combine • Adapt • Magnify / Minimize • Put to other uses • Eliminate / Elaborate • Rearrange / Reverse.
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SCAMPER and the Potato Peeler
Education
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Communication of Ideas Sketches
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Student Examples of Modifications • All stainless steel • easier to clean and less risk of food poisoning.
Detachable head • different heads with different size holes. Rounded top to handle • • would not stick into hand.
Handle pulls off to reveal potato peeler.
Snow globe on handle with a festive theme – Christmas market
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Stainless steel Seasonal handle Potato peeler in handle Interchangeable head
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3D Drawing
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3D Exercise
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PAPA
www.ziba.com
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The Design Brief
Clear statement analysing the design opportunity and how it will be achieved Consideration of the following: The problem How it will be used?
Who will use it?
Ergonomic Factors Safety Factors Cost Limitations
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The Design Brief
Example Design and manufacture a novelty desk tidy that incorporates a fan, suitable for a 6-8 year child
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The Design Brief Folder
The design brief Analysis of chosen brief Research and investigation Generation of ideas (at least three) include sketches Selection of solution Working drawings Manufacture order Material list and costs Testing and evaluation