Tuesday, September 22, 2015

22 September 2015 (Tuesday)

Dear children,


We spent today working on a series of experiments with magnets and completing more exercises in your Science Activity Book




  

Through the experiments, you saw for yourselves:

-How a magnet can be made by the stroke method and how the number of strokes can determine how strong the magnet becomes

-How a simple electromagnet can be made using a battery, a steel nail, sticky tape and insulated wire, and how the electromagnet can be made stronger in two ways

-How ring magnets on a stick interact with one another with their poles

-How the strength of a magnet does not depend on its size 
(Remember the big but weak U-shaped magnet and the small but strong horseshoe magnet?)

-How magnetic force can pass through non-magnetic materials but cannot pass through magnetic materials
(Remember how the paper clip attached to the base of the retort stand can 'magically' float, but drops when a sheet of iron is added to the setup?)

After today's lessons, we are left with just one short activity in your Activity Book before we complete it. We will then go through the topical papers which you have completed and finish up the topic on Magnets. Science lessons after that will then focus on revision. 

You should start revising Term 1 and 2's Science topics at your own time. There is quite a lot of Science content for you to review and master. Therefore, listen to Mrs Poh's advice given to you during your previous Moral Education lesson -- start early!

Remember to refer to your handbook and act on what you have taken down.

See you tomorrow for another day of learning! :)

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