danaleeling

The Wednesday diagram on chronograph use was still on the board. This introduction including the equation works well to prepare the students for the lab on Thursday. Walking speed and chronograph use was on Wednesday, on the right is the Thursday laboratory. An El Niño southwest wind generated a south wind between the buildings. The venturi effect increased the crosswind speed. Despite this, the ball generally rolled straight. The slight slope offsets friction quite nicely. Marks every 1.5 meters for the slow ball roll. Practice roll The moderate speed ball was timed on three meter intervals. The fast ball on six meter intervals.  Recording data directly into Desmos.  Back in the classroom by 09:46. Demonstrating 0 m/s and the impossibility of a vertical line. Played Billy Preston's nothing from nothing. Right board. Left board including coverage ...

Day one was a course introduction and coverage of the technology used in the course. Soap for the first laboratory was acquired at Yoshie. The loss of both floating Ivory soap and the absence of other square bars of soap led to the decision to use Lux 80 gram bars. The six pack was not previously seen on island. Sixty-five cents a bar, $3.90 for the six pack. Three six packs were purchased. Petty cash was not used for this purchase. With an enrollment of 31 a week out from class, 18 bars were acquired. Students working in pairs provides sufficient soap for 36. Fresh soap is necessary each term as fresh soap is softer, easier and safer to carve. Old soap hardens making carving harder. The soap also tends to fracture and crumble. Since volume errors almost always lead to overestimates of the density, no group should obtain contradictory results. The soap will be predicted to sink and will sink. Day two Day two covered measurement, units of measurement, and density. This follo...