Posts

050 RipStik change in momentum is force

Image
This exercise requires eight to ten stopwatches, the eight meter tape measure, red spring scale, red yarn, chalk, RipStik. The theory was presented up front along with a diagram of the demonstration. After this the class moved to the sidewalk to gather data. The red yarn and red 20 Newton spring scale was used to obtain a force of 10 ± 2 Newtons.  As last spring, all work was done on the whiteboard. Median time calculations.  Maicalany recording a speed trap time on the board after the run. After class the data was entered into a spreadsheet that tracks 050 experiments. The 31% difference was the largest seen for this demonstration in the two prior terms in which this version was performed.  Reference photos are available from last spring . To be fair, the demonstration came on the heels of a memorial service the evening before and the rider was not ready to make this run. 

4.2 4.3 Slope intercept and slope

Image
Due to 4.2 and 4.3 being combined as the result of a holiday, swizzle data was gathered on the porch to reduce travel time. The period was still tight. A ten meter run on the porch was still functional. Spreadsheet Data was recorded directly into the spreadsheet on the Samsung Active5 tablet while on the porch. Another spreadsheet  tracks 163 runs back to 2011. The board was used to emphasize that the columns were reversed.  Note that the board is using the data from 4.1 in the previous class . This run would be particularly useful because of the large gaps in the split data out beyond 33 meters. That data can be extrapolated beyond maximum x.  The swizzle data is more useful as extrapolation below minimum x or above maximum x are physically unrealistic. Packing the demonstration, 4.2, and 4.3 was tight. Too tight to demonstrate the 4.1 homework and hooping data exploration. 

Is the era of mathematics research done by humans over?

Image
The articles  'Why would you ruin your career?': OpenAI claims to have cracked one of math's greatest unsolved problems, but mathematicians allege it played dirty ,  OpenAI fought dirty on career-making math problem, says NYU mathematician , and AI Is Solving Math's Best Problems Faster Than They Can Be Replaced, Terence Tao Warns , make clear that AI poses more than an existential threat to research mathematicians.  The situation is just crazy at this point, but underneath the accusations is a deeper question of whether humans have any future in doing mathematics. The smartphone I carry on my hip today has more computational power than the most powerful computer in existence on the day I was born. While the compute in question used an astronomical sum of money - 22 million dollars worth of tokens - that is at today's capabilities.  Mathematics done by humans has hit an existential crisis. While my emotions side with the human mathematicians and their call for e...

Banana leaf marble ramp conservation of energy

Image
Wednesday evening banana leaf harvesting was forgotten. Six in the morning in the semi-dark stumbling around in the jungle was the result. Set up really did not get underway until 8:04, with the first ramp in place by 8:20.  This term the steel marbles were used along with the equipment seen above. As was done last summer, the theory preceded the experiment. This term the theory was reflected onto the Smartboard in Desmos. Only after the theory was covered was the experiment explained and demonstrated. This took until 9:00. This approach allows space for a lecture on experiments that confirm or reject a proposed theory. The split in the momentum results for three marbles into five marbles provided an example of how experimental results can differ, but a general consensus solution can be reached even given differing results.  Grace Marie and Bracey hold the meters sticks while Veronica marks the heights. He...

Healing plants

Image
Two documents were preprinted due to the size of the class this term - 30 students. One was a triple spaced list of student names to be used for quick notes during the presentations. The second was pages seven and eight of the Paies walk reference . These pages of the Paies walk reference are hoped to be useful to avoid spelling and state name lookups for plants during the presentations.  Keesha explained the locally well known use of guava leaves to treat diarrhea. She did not mention that the leaves to use are the newly formed leaves at the end nor a dosage, which is typically four leaves.  This term has been marked by an ever increasing loss of local language and traditional knowledge. Field walk questions such as "What is the name of this plant in your language?" generally elicits silence. Plants that virtually every student knew back in 2002 are now unknown to virtually every student in 2026. The course is an element in the effort to retain local language kno...