UM L3 Video Clip 1: Group discusses initial model

UM L3 Video Clip 1: Group discusses initial model

A group from a previous semester discusses their initial model: a separation model.

UM L3 Video Clip 2: Group 1 discusses initial model

UM L3 Video Clip 2: Group 1 discusses initial model

Group 1 discusses their initial model, a separation model with + and – charges. Some discussion as to whether the – means nothing is happening.

UM L3 Video Clip 3: Group 2 discusses initial model

UM L3 Video Clip 3: Group 2 discusses initial model

Group 2 discusses their initial models. Each student in the group has an alignment-type model. Nikki talks about how she was influenced by the simulation they explored as part of the previous homework (UM Ext A). Although their model has many features of the alignment model they still think something switches in the middle of the nail when it becomes magnetized.

UM L3 Video Clip 4: Group 1 discusses revised model

UM L3 Video Clip 4: Group 1 discusses revised model

Group 1 discusses how to revise their model after seeing both videos. One student suggests after rubbing the N and S are scattered 'but in an organized way' so after cutting 'you still get the same (N&S) in each piece.' Veronica draws a model that has increasing number of either N's or S's as you go from one end of the nail to the other. Hence no matter where you cut it you still have some of each type in each piece.

UM L3 Video Clip 5: Group 2 discusses revised model

UM L3 Video Clip 5: Group 2 discusses revised model

Group 2 discusses their 'revised' model. This is actually pretty much the same as their 'initial'' model. They like it because they think it works.

UM L3 Video Clip 6: Group discusses revised model

UM L3 Video Clip 6: Group discusses revised model

This is the group from the previous semester discussing their revised model.