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Showing posts from January, 2023

Histograms for small sample sizes in Google Sheets app on Android

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If one is making a histogram for a data set with a small sample size using the Google Sheets app for Android, then the app may choose another chart type. The icon for making a histogram chart is not obvious and is not labeled. Start by selecting the data using your finger to tap and then drag on the phone screen. When done, click on the + symbol at the top of the screen.  Select Insert: Chart The result will probably not be a histogram chart. In this example Google Sheets opted for a Line chart. Click on Type: Line chart to change this.  At the next screen you will have to scroll down to see the histogram option. And icons are not labeled. The histogram is the stack of blocks on the right side, all blocks the same color.  From there the left arrow ← Type can be tapped to return to edit the chart title, axes, and legend placement. 

Arc of a ball acceleration days four and five

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A racquetball in flight generating an arcing path The boards span roughly 480 centimeters, divided by six is 80 centimeters per panel.  The board was divided into six 80 centimeter panels. Students were invited to come up as pairs to trace the path of a raquetball. Six groups, six racquetballs, six arcs. K'con, Ivan, Billy, Polly Melina, and Milain at the board above. Billy tests an arc Afterwards the students were encouraged to form larger groups to try to find a mathematical equation that would describe the arc.  Desmos was recommended for this. K'con The result was an engaged exploration of mathematics and quantitative reasoning.  Some of the arcs on the board. Labelling with names would prove useful later.  That the horizontal and vertical radii are not equal means that a circle cannot describe these arcs.  K'con and Ivan continue to work on finding an equation Polly Melina and Billy On Monday I invited the groups to present, group by group. I led off with an introducti

Canvas analytics week three spring 2023

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Week three saw an uptick in the number of courses and instructors on the platform as efforts to ensure all courses have a presence on Instructure Canvas at the college bore fruit.  This is a direct result of the effort by the director for the Institute for Student Learning and Excellence in Teaching. The ISLET director has provided a single point contact for faculty seeking assistance and has also been instrumental in proactively reaching out to faculty with unpublished courses. As a result of these efforts, more courses and instructors have a presence on the platform than was the case in fall 2022.  Although faculty and courses are present on the platform in higher numbers that the previous term, pages views remain below well below fall 2022 values. Pages views are considered a proxy for engagement, but long term values and trends are yet to be established. Term start page view values are consistently higher than the rest of the term as faculty set up courses. Page views tend to consi

Healing plants presentations

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Latisha explained the Kosraean use of ii (Morinda citrifolia) to treat cancer by boiling 12 yellow leaves. Steam or drink as daily drink. Green leaves  are used for steambath for respiratory ailments. Drinking green leaf tea cleanses system. Bathing in an infusion from the green leaves used to clean female areas after delivering a baby. Ivan explained how karamahd (Coleus scutellarioides) is used for treating rashes and cuts. Squeeze four leaves onto wound.  Kaltrickson presented on the use of kuapa (Psidium guajava) to treat diarrhea. Four immature leaves picked in pairs. Charlyn Rose presented the Chamorro use of beach morning glory, alahai or alalag in Chamorro (Ipomoea pes-caprae). The leaves and stem are used to make tea to treat chickenpox. Peter of Feshailap island, Yap state, noted the use of coconut tree roots for the treatment of stomach pains. Coconut tree roots are pounded. Four young ones. Then one sits and drinks for stomach pains. Ann-Mary noted the use of pwisenkou (Age

Acceleration of gravity on day three

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The board from Wednesday was intact, so I followed the path I took fall 2022 and used the start of the lab to pull together the last week and half.  I included the velocity versus time graphs, although these graphs appear to remain confusing for the students to think about.  The above was still on the board from the day before. I would add a velocity line to this graph later. Jonathan and Athina Viola working at one meter Morales and Sharla also working at one meter Mersayes and Ashlen performing drop times from one meter Mersayes and Ashlen at two meters Working at four and five meters Conditions were wet in wind driven rain Left board by 8:00 section end Right board 8:00 section end Acceleration of gravity results Which value is correct? In some sense these are all correct: each represents the best measurement effort of a particular lab team. In another sense these are all incorrect because none are the known value of 9.78995 m/s² for our location. Yet the reduced acceleration for t