Force is an abstract concept in science. The best way to understand force is to study the effects of a force using examples that students are familiar with. For example, you can use the scenario in a 'roti canai' stall to illustrate some of the effects of a force.When the 'canai' man is preparing a piece of 'roti canai', he uses a force that causes the dough to change its shape and size before turning it into a piece of 'roti canai'.
When he is preparing a cup of 'teh tarik', the twisting and turning of his arms cause the tea to change its direction.
When he is pushing a trolley filled with dirty plates and cups, a bigger force will cause trolley to move faster.
It will be more interesting, exciting, exhilarating and memorable if the lesson can be conducted in a 'roti canai' stall.
3 comments:
Today when i teaching "force" i use this story:One day David Beckhem meet Steven chow (The leading actor in the movie "shaolin football").David Beckhem saw there was a football at field so he passed the ball to Steven Chow.Steven Chow then passed back a "powerful" ball.Then I explain(with graphic),initially the ball stayed at rest. But when Beckhem kick the ball he made it moved(force can cause stationary object to move). Backhem passed the ball to Chow and he passed it back(force can cause a moving object to change direction).When Beckhem kicked the ball,it moved with 5 m/s but when Steven kicked back, the ball moved with 50 m/s(force can increasing the speed).Finally, because Steven kicked a "powerful" ball,the shape of the ball change(force can change the shape of an object).That is all the story about.
That's good. When you relate an abstract concept with something students like, you 'switch' them on. Furthermore, when David Beckham meets Stephen Chow, students will be late for the next lesson--they refuse to let you go.
Mr Lai, you are absolutely on the right track. Nothing wrong when integrating common 'icons' to explain lessons. Infact, indirectly this technique will alert the students and they will show extra interests in particular topic.
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