The lessons taught in term 2 are indeed interesting. We learnt the instruments of measurements, the vernier caliper , micrometer screw gauge and the metre rule. We also learnt the SI units and its importance. SI units were created to standardize the measurement. Before this, there was complete chaos. The Egyptians used the length from the elbow to the hand as one cubit. Anyone can spot the loop hole here. When you sell your house, just use a child's arm and you are sure to be a millionaire overnight. Therefore, the king instructed that one cubit would be marked out using his arm. The effects were almost immediate as the Egyptians built the pyramids using this standard unit.
Term 2 has made me realise that many things around me are all science's doing. Sometimes, I imagine, what if there was no SI units, no micrometer screw guage, no vernier calliper, what would the world be like?
Sunday, July 11, 2010
Reflections for Term 1
In Term 1, we learnt basic science and how science is used in the real world. The topic on Science as an Enquiry is interesting and prepares us for subsequent science topics. In secondary school, we get a chance to do experiment in the Lab. In primary school, we never get to use the bunser burner, let alone experimenting with the chemicals. Before this, I used to think chemicals are fatal stuff.
I also have another discovery. In Secondary School, we do not just memorise important science concepts, we do experiment, see the outcome which help us understood the concepts better. For example, we do not just memorise how a vernier calliper works, we use it to know how it really works. Learning from experiement is a more effective way to learn Science. Now, I am able to see science unfolding infront of me, and not just plain text in textbooks that feeds me with facts after facts. Lab work is an amazing world of Science in action.
I also have another discovery. In Secondary School, we do not just memorise important science concepts, we do experiment, see the outcome which help us understood the concepts better. For example, we do not just memorise how a vernier calliper works, we use it to know how it really works. Learning from experiement is a more effective way to learn Science. Now, I am able to see science unfolding infront of me, and not just plain text in textbooks that feeds me with facts after facts. Lab work is an amazing world of Science in action.
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