Sugar+Content+of+Soft+Drinks

Same issues as last time. Not enough time. At the beginning we discussed the homework for the Cardboard Cube. This took some time.

The end was a little rushed. Ideally, they should have stopped when they finished the graph.

The best way to proceed is to stop at the graph. Ensure that wll the details of the graph are done correctly. They skipped some of the instructions. As is common, the eye jumps over details in the instructions.

The sugar content of the soft drinks could be left as homework.

There is also the issue of the density of the sugar solutions. The significant difference in the density of the sugar solutions is in the second decimal place. This is right at the limit of the precision of the balances used.

We should carefully redo this part ourselves to be absolutely certain of all the issues involved. To pipette or not to pipette. To use a .001 g precision balance. To use a lrger volume of the sugar solutions. To start of with a higher initial concentration.

Overall the class efforts were great. Everybody seemed to be concentrating all the time. No extraneous conversations. They used the mininotebooks very well. Very successful in this respect.