When I talk about presenting nowadays a strong image often comes floating back from my past life as a teacher.
Standing close to a large ruler… a look of serious concentration on my face… goggles safely on… arm outstretched… holding tightly onto an elastic band. I have a volunteer gradually add weights…
50 grams! 100 grams! 150 grams!
As each mass was added the elastic stretched and the new length was entered as a data point by another student. The results were plotted instantly and projected on the wall.
The mass kept increasing… 1.1 Kilos! 1.2 kilos!
The students can see the line on the graph behind me is levelling off. They know what is about to happen but they can’t know when…
