danaleeling

On Monday the tenth of October I introduced the normal distribution as a random distribution by scattering plastic beads and showing that the mess on the floor was distributed normally. On Wednesday I gave each student five marbles. Marble trading in progress I told them to keep all, trade away some, or trade away all - their choice. Afterwards some students had none, some still had five, and some had many marbles. Before and after trading marbles per student and quintet averages The data above from the 9:00 section  shows that while many student wound up with five after trading marbles, or choosing not to trade, some students have more marbles and a few had no marbles. I asked what the average number of marbles each student had post-trading, most did not realize that the population mean for the class remained five. Statistics before and after marble trading and for the quintets That the population mean number of marbles per student remains five can been from t...

On Monday I introduced the latitude and longitude system, which was review for some students. The equator being zero, the poles at ±90°, the prime meridian, and the anti-meridian. I also showed how to turn on the GPS units. I suspect more time should be allotted for learning to turn on the GPS units and get to the latitude and longitude screen - at least one group, if not more, did not change from the ground navigation screen, following the randomly pointing arrow that indicates the direction in which the group is moving. This time I opted to hunker down in the grass below the cemetery, coming in from the west to cover my tracks. At least one student who swung west of my position realized that the grass was recently bent and that must be my track. He was working with his smartphone and was first to find me on Wednesday. He opted to drop into the grass with me. The blue shaded circle shows an estimate of the positional error at my location, the blue "beacon" shows I ...

A visit to the Pwunso botanic garden, the site of the former Japanese agriculture station, begins with the Ficus prolixa. Some of the plants in the front garden include: Front garden: Angiosperm: Ficus prolixa. Banyan, aiau, auu, aw, kohnyah, leaves as hair conditioner Angiosperm: Artocarpus altilis. Breadfruit. Angiosperm: Ravenala madagascarensis. Traveller's palm. Angiosperm: Syzygium aromaticum. Clove tree. Gymnosperm: Araucaria columnaris. Cook Island Pine. Family: Araucariaceae Angiosperm: Cinnamomum verum. Cinnamon tree. Gymnosperm: Cycas spp. (male). Cycad with cone. Maybe C. circinalis or C. rumphii. Angiosperm: Coffea robusta. Coffee. Angiosperm: Piper nigrum. Black pepper. Family: Piperaceae. [no longer extant 2018] Angiosperm: Myristica fragrans. Nutmeg and the spice mace. Angiosperm: Eucalyptus deglupta, Painted eucalyptus. Angiosperm: Piper ponapense. Pohnpei pepper vine konok. Family: Piperaceae. The bus arrived on time at 3:53 PM. After v...

A unit and heat, temperature, and the difference between heat and temperature began with an older video from 1980 that rather concisely and accurately covers the two concepts in a series of six videos. The videos also introduce terminology and vocabulary carefully, covering a number of topics. On Wednesday the freezer was broken for my demonstration of the Celsius temperature scale. I bought ice and vegetable oil at the store. Some of the ice was used to demonstrate zero degrees Celsius, the rest was used to chill a small beaker of vegetable oil. Another beaker of congealed cooled coconut oil was used to demonstrate the melting temperature of coconut oil. A third small beaker of oil was put on the hot plate, that would rapidly start smoking up around 300 degrees Celsius - which is when I discovered I lacked a hot pad to remove the small beaker. I also covered the mathematics underneath calculating heat capacity from a change in temperature. Sweetmarshya "Marcia...

With the sun crossing the equator on the 23rd of September, the ethnobotany class took to cleaning up the Haruki cemetery on campus. The following are images from the clean-up.  Arlynn clears tall grass while Tulpe watches Justin and Jerome did heavy grass whacking work along the front of the cemetery Ixora casei on the far right, Cananga odorata in the background More Ichaemum polystachyum cutting, Venister chipping in Arlynn, the Cananga odorata on the back left. Hibiscus tiliaceus behind Arlynn Adelma next to the Acacia auriculiformis, Alpinia carolinensis behind her in the background In the center left, Coffea arabica. On that is growing Piper nigrum Jerome strikes a pose - photographs were being taken by Bredalyn On the left side of the image is Volkameria inermis, formerly Clerodendrum inerme Almost everyone was engaged in the Ohigan clean-up I was cutting Hibiscus tiliaceus that was blocking sight li...