142 – Damn The Pacing Schedule

This has turned into a two day work week. We had two days off at the beginning of the week and then today the PSAT dominated the school day.

I am a huge planner. I am not a huge pacer. I like to have structure, but then I like to see where the kids take us each week. I am not a big fan of phrases like “covering the material” and getting through the content”.

I hate wasted time. I love having more time than I thought.

143 – Learning Commons and More Fast Plants

Today in AP biology we visited our school’s new “learning commons”. The learning commons (LC) is the new “media center”. It was transformed last year with a $250,000 grant from our county into a state of the art, digital learning area. One of the big features I like are the “meeting rooms”. Each room is almost soundproof and has a flat screen TV with hook ups for any sort of computer. Kids can meet there and work on projects. The walls are all writeable glass.

So, today we went there to work on the history of the earth assignment using the HHMI History of Oxygen on Earth and the Earth Viewer app. The app is installed on Ipads and kids projected an Earthviewer onto the flat screen and individually had computers or Ipads to answer the Google for questions.

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We also re-planted the Fast Plants today for the artificial selection lab. I made a brand new light bank and Heidi at Wisc Fast Plants was nice enough to counsel me through some of the mistakes i was making. I really hope we have better luck.

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A very productive day!

144 – White Boarding and Deciding on an Origin of Life

Today the honors kids finished up their biome exercise and white boarded the results. The white board had a title, general information, a climatograph and a summery of the ecological impact to the biome.

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In AP biology the students received contrary information to the life’s origin point of view from yesterday. They did a great job learning from each other and I felt that this was a whole lot better than lecturing about it.

145 – Winogradsky Revisited, Biome Whiteboarding and Origin of Life Case Study

Today in honors biology we took about 15 minutes and looked at the Winogradsky columns. It has been 4 weeks and the layering of the bacteria is awesome. We definitely have cyanobacteria, iron reducing and sulfur reducing bacteria and hopefully the stratification will get even better in the next 4 weeks.

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We also began a biome activity where the learning groups pick a biome, research the basics, create a climatograph, and read a case study on an environmental impact in that biome. They then will whiteboard and explain the biome to their peers. Totally formative, assessing two learning objectives.

In AP biology we started a slick case study debate from the National Center for Case Studies (University of Buffalo) on the origins of life. In day one, kids are broken into two groups and learned about either the metabolism first origin or the replication first origin. Then they went back to their quad groups and taught each other. Tomorrow they will divide again and get conflicting information and consider how their new refutation information fits into their original idea.

Teaching Math

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My daughter struggles with math the same way I did in school. She gets tired and loses patience and makes easy mistakes. Sometimes our weekly Sunday math sessions can become very contentious.

I wanted to go over the commutative, associative and distributive properties with her and was trying to avoid a worksheet straight away and maybe use it later for verification.

I decided to use a jar of paperclips to use to model from now on with math. They are small, colorful, not candy and easy to manipulate.

We started out with something I saw in Twitter last week: model 2×3

I was really surprised and encouraged when she placed the paperclips into two groups of 3 instead of arranging them in a 2×3 pattern as you’d see on a worksheet.

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We then moved through equations modeling things like 3x(2+3) and distributing them (3×2)+(3×3); modeling 2+3 = 3+2 and 1x(2×4) = 4x(1×2). The paperclips really helped. When we used the worksheet for verification, she made a couple of mistakes but it was a lot less aggravating. I feel that she understood the properties better than she would have a trick. It took longer to teach and learn, but I’ll see if this technique helps pay dividends in the long run.

146 – Fast Plant Fail and Speciation

In the ongoing saga of our plants… I contacted Heidi at Fast Plants and she was awesome in her analysis and recommendation. So, I am going to replant next Wednesday and use a new light bank with 8 lights and hopefully I will get better results.

In AP biology today we watched the HHMI short film on the speciation of anole lizards in the Caribbean. We then proceeded into the virtual lab. The lab is great but there is no way for kids to save work if a module is incomplete. That was their beef. Tomorrow we will complete it and wrap up speciation.

In honors biology we used a spreadsheet to calculate the total energy consumption of the owls in the model ecosystem. This data came straight from the owl pellet prey and it was cool to see how so little owls can be supported in the ecosystem, based on the trophic structure. The kids can then go backwards, calculating the energy needed at each level.

147 – 6 x 1600 lumens

Our Fast Plants are shrimpy. I have been eliminating variables all week. The final straw was replacing the 40 watt 4′ bulbs with 40 watt grow bulbs. I would have preferred 32 watt bulbs because they are cooler, but I have a fan running so that should help. So, I have 6 40 watt 1600 lumen bulbs on the plants and you can see the spectrum difference by looking at them lit up. I hope this is the variable that when changed, makes a big difference in our plant growth. I had Gro Lux bulbs in and I am not sure they have the plant specific spectrum I needed. It’s like Asia said, “Only time will tell.” I just quoted Asia.

In honors we wrapped up the bone ID portion of the lab and tomorrow we will move on to the trophic analysis portion. We will look at this as a class first because the spreadsheets tend to scare off the freshmen.

In AP biology someone said today, “You mean we get to do speciation today?” which was kind of cool to hear. Sympatric speciation is always difficult for them to understand and everyone got a kick out of the zygotic barriers. Well, only because I told my “behavioral isolation” story. OK, it goes like this…

Back in 1992 i was doing my masters thesis field work on St. Catherines Island off the Georgia coast. It is an uninhabited island for science and historical research and only accessible by boat. On the island (not many people know) the New Your Zoological Association runs an endangered species preserve. So, lots of organisms that have lost their habitat make the island home. There are zebra, macaque monkeys, lemurs, giant tortoise, all kinds of birds, and a lot of herding African animals. On the days where the salt marsh tides did not cooperate with my field work, I got to tag along with the zoologists and one of the things we did was drop food. They were looking at some zebra and i was watching the gazelles come up the path for food in single file. The one in front stops about 50 yards from me. It had some pretty large horns that went straight up over the head. It began lifting one leg up and down, almost like a bull would before a charge. After a few moments, I decided to do it too. So both of us standing in the middle of a savanna lifting our legs. The zoologists laughed and made sure I knew I was doing the mating ritual of the gazelle. I always tell that story with behavioral isolation since obviously the gazelle female thought I was pretty hot, but alas we were both confused to what the signals meant.

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Tomorrow we will work on the Lozos lizards short film and virtual lab which should be lots of fun.

Grow plants! Grow!

(photo: imgarcade http://imgarcade.com/about.html)