Monday, April 28, 2008 ♠
Thats all for today's post...will put more tomorrow and try my very best to put the picture of my mechanical toy....KIDS WILL LOVE IT!...DNT DNT!
Posted @ 10:56 PM
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Contents are as follow : a) Problem Situation b) Concept Map
c) Design Brief And Specifications d) Research e) Ideas f) Developchosen idea g) Production Planning h) Presentation Drawing
Blogging ( Individual )
1. Creativeness / Innovative 10
2. Contents 10
3. Sketch / Draw / Copy / Paste 10
4. Skin / Tag Box / Music ( relevant to topic ) 10
5. Video Clip/s 10
6. No of pupils who signed in 10
7. Good Design of Blog 10
8. Twice weekly update of info in the blog 10
9. Colours 1010. Presentation
Posted @ 10:36 PM
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For a toy to work, there must be a reason behind it.
Toys work under the theory of different simple machines working together.
The more complicated a toy is, the more number of simple machines will be used.
Simple machines are types of machines that do work with one movement.
There are a few main simple machines;
INCLINED PLANE
An inclined plane is a slanted surface used to raise an object. A ramp is an inclined plane. When an object is moved up an inclined plane, less effort is needed than if you were to lift it straight up, but, you must move the object over a greater distance.
SCREW
A screw, is another form of an inclined plane. A screw is an inclined plane wrapped around a cylinder to form a spiral.
LEVER
Levers are simple machines used to lift weights.
1st class lever
An example of this type is a seesaw. The load is the person that goes up, and the effort applied is the weight of the person that goes down. The fulcrum is in the center in between them.
2nd class lever
An example of a Second Class Lever is a can opener. The difference from the first class lever is that the fulcrum is on the end, instead of in the middle.
3rd class lever
An example the Third Class Lever is a fishing rod. The load is the fish; the handle end is the fulcrum.
PULLEY
A pulley is a chain, belt or rope wrapped around a wheel. The mechanical advantage of a pulley system is approximately equal to the amount of supporting ropes or strands.
WHEEL AND AXLE
A wheel and axle is a lever that rotates in a circle around a center point or fulcrum. The larger wheel (or outside) rotates around the smaller wheel (axle). Bicycle wheels, ferris wheels and gears are all examples of a wheel and axle. Wheels can also have a solid shaft with the center core as the axle such as a screwdriver or drill bit
Information from : http://library.thinkquest.org/J002079F/lever.htm
http://www.usoe.k12.ut.us/CURR/Science/sciber00/8th/machines/sciber/intro.htm
Posted @ 10:20 PM
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MECHANICAL TOYS VIDEO
This video feature the diffrent tpyes of toys made by the other students works.
Posted @ 10:15 PM
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second post...hmm tmr will need hand up my mechanical toy le...basically, mechanical toy needs to use a gear system like the wheel and axle to move the dummy,we need to do researches on what we need to do and sketch out many ideas and finally choose a final one to do.
Posted @ 10:10 PM
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first post!!...finally...done with part of my mechanical toy, it's a spongebob moving up and down behind a brick wall!...hmm...somehow it's ugly but is i make it one so...must be happy of it!
Posted @ 7:16 PM