Tuesday, November 15, 2011
Lesson on Wednesday
Why things float in water (or any fluid,for that matter)? You see when things are in water, the things experience a push. This push is upwards. It is called upthrust, a kind of force.
The size of this push depends on how much water is displaced by the thing. That is why a marble sinks and a heavier soccer ball floats.
We also solve the problem of looking for names of animal that has the same number of vowel as there are consonants.
We had two groups chatting about assessment things during Conversation Time.
I also posed a problem - how to compare the performance of the groups based on the ratings that you give the groups.
For example - Group 3 (Liana's) scored 3,3,3,3,3,3,3,3,3,3,3,2,3,3,3,3,x,3 (x means comment without rating) and Group 4 (Noorlinda's) scored 3,2,3,3,1,2,x,3,2,2,2,2,2,2,x,x,2). How can we determine which team receives a higher rating. Come up with thee different approaches. Do all approaches result in the same outcome?