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Task Description
In this topic, students learnt about one of the simple machines -the lever system. They learnt to identify the three basic components of a lever system (load, effort and fulcrum). Students applied the concepts learnt in the lever system to distinguish different tools used in daily life and whether they were lever system or not. Besides that, students also learnt to determine if the lever system is saving force or not by comparing the distance of the loading arm and effort arm.
Student's work
6C (22) Andrew Siu
Student's Reflection
I learnt about the uses, the structure and the tricks that would be used in a simple machine – the lever system. One of the tricks I learnt would be how we could use lever systems in a way to save force. The lever system is highly related to our daily life, such as the see-saw in the park. Another example would be the lever on a cart so you can lift the goods in the markets. I enjoyed this topic the most by doing the experiments. I tried to build and test different lever systems in science class.
I would like to learn more about the laws and physics behind the concept of a lever system in the future.
Teacher's Comment
Andrew showed great efforts in his work. He took notes in class to understand more about the different types of lever system. He showed he understands the basic lever concepts well in his work. He could identify the three main components in different daily tools and whether a lever system is saving force or not. He further applied the concepts he learnt to distinguish different lever systems in our daily life, through his own reflections. Well done, Andrew!
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