Day 19: Technology: It was all worth it!Posted: September 20, 2012
Yesterday I spent an hour or so problem solving why LoggerPro wouldn’t allow us to insert videos. Today I spent an hour and a half uninstalling and reinstalling LoggerPro so that it also installed quicktime. Before this I had to spend 2-3 hours problem solving network connections with the damn things.
It was all worth it today.
Today my last class was having a board meeting, looking at v vs. t graphs for carts released from rest moving down an incline. Some groups had curved v vs. t graphs, others had linear. Discussion ensued. Is it curved because yours is a shallow ramp? Longer? What makes one curved and one linear? One person gave an elaborate and well phrased description of how it would make sense if the graphs curved, as something going down a hill speeds up slowly at first and then faster towards the end. The other students bought it.
I looked at the clock. If I did this we wouldn’t ‘get where we needed to be.’ I decided it was worth it. I had the groups go back to their computers and reload their video onto a new LoggerPro file. Then I told them to be very careful when they clicked as the cart went down the ramp. All but one group got nice, linear velocity graphs; the group that did not was skipping 4-5 frames for each click, so I asked them to fill in their data with more clicks. Sure enough, linear.
In the past I would have either told them it was ‘supposed’ to be linear or we would have had to come back to it on a day that we could reserve the computer lab. Now we were able to instantaneously, scientifically determine the answer to the question at hand. Awesome.