Maggie E. has a wonderful eye for spotting small fauna. She found this mason wasp (Monobia quadridens) while we were weeding the Heifer Ranch’s herb garden. It had caught this caterpillar and was trying to take off with it. It was a difficult job – the caterpillar probably weighed as much as the wasp – but it finally managed to take it away.
According to the Atlas of Vespidae, these wasps prey on small moth caterpillars. Which is probably why they are usually found in open habitats with flowers; hence the herb garden.
They also use caterpillars to feed their larvae (Wikipedia, 2011). They’ll lay an egg in a cell of their nest and stick a paralyzed beetle larvae, spider or caterpillar in with the egg to feed the wasp larvae when it hatches.
References
Identifying these wasps was not too hard. The first image in the google search for “wasp caterpillar” looked just like the bug we found, carrying almost the same type of caterpillar.
The image was from the wonderful “What is that bug?” where you can send in bug pictures and the author (Daniel Marlos) will try to identify them.
What’s That Bug referenced the BugGuide which gives the full taxonomic classification and a lot of information about habitat, food and life cycle that’s in an easily readable form.
Daniel Shechtman was just awarded the Nobel Prize in Chemistry (2011). He discovered that matter can exist not only as crystals, which have a regular geometric arrangement of atoms, and amorphous non-crystals that do not, but also as quasicrystals which have a different type of atomic ordering.
The Guardian has an interesting article on Schechtman, whose discovery was roundly disbelieved by other scientists and he was ridiculed for years.
In an interview this year with the Israeli newspaper, Haaretz, Shechtman said: “People just laughed at me.” He recalled how Linus Pauling, a colossus of science and a double Nobel laureate, mounted a frightening “crusade” against him. After telling Shechtman to go back and read a crystallography textbook, the head of his research group asked him to leave for “bringing disgrace” on the team. “I felt rejected,” Shachtman said.
We worked in the fields this afternoon: picking beans and planting garlic. Clear skies with a cool, early October breeze; warm, but not hot.
It was enjoyable work. The fields were small and there were a lot of us. Lots of conversation.
We picked somewhere close to 64 lbs of green beans, which, according to our guide, sells for somewhere around six dollars per pound (organic beans). Three hundred and eighty four dollars. Took us about an hour.
Earlier in the morning, we’d had a discussion about Community Supported Agriculture (CSA). Heifer ranch is a CSA. People from the surrounding towns buy shares in the annual crop, and the ranch brings them a basket of produce every week for the season. CSA’s are great: fresh local produce, for about the same price as in the store. You tend to get a broad enough variety that it helps expand your cooking repertoire. And you avoid all the externailties from long distance transportation and factory farming.
They (our guides) had compared CSAs to the “typical” industrial agricultural system. Students read out notecards as they went through the all the jobs of the people who get your tomatoes to you. One student, who represented the energy going into the system, had to do a lot of jumping-jacks and pushups – situps too. There are eleven different jobs in the industrial system, with the people actually picking the crops – migrant workers – getting one cent for every dollar you pay at the store. They are three jobs within the CSA, and the farmer gets 80% of the sale price.
The presentation was a little problematic, unfortunately. Heifer is a CSA after all. Trouble started with our facilitator’s terminal question, “So which one do you think is better?” The first response was, “Well with the economy these days, won’t you loose a lot of jobs with the CSA?”
Fair point. But it might be argued that the industrial system might take one big farm and 11 jobs to bring 1200 tomatoes to market, it might take 4 CSAs, and about the same number of jobs (12), to do the same. Although the each person in the CSA system gets a little less, the money is more equitably distributed.
The second question, cut to the crux of the problem, “But what are the notecards leaving out?” Cynical? Perhaps. However, I’d like to think of it as healthy skepticism.
So now our guide was stuck. How could she, an obvious advocate for CSAs, convince the skeptical? Not easy, perhaps not even possible. By being too strong of an advocate for her side, she’d have a hard time convincing even the impartial.
It’s not easy making an argument that you’re passionate about. Not at all.
I made sure I had a small discussion with the more skeptical students, to make sure they realized that even if you distrust the credibility of someone, you can often learn something useful. In fact, that’s why you should always look for multiple sources of information. Also, while CSAs are great for some things, local farms in Arkansas or Missouri aren’t going to be producing a lot of tomatoes in January.
That’s why I’m glad we picked the beans later in the day. And it was important that we did the accounting.
It took sixteen of us one hour to pick $384 worth of beans. That works out to 24 bucks per person per hour. Since the migrant workers only make 1% of the final cost, we would have made about 24¢.
24¢ for an enjoyable hour of gardening on a pleasant day. But what do you do when you’re hot and miserable in the middle of the summer, and hour after hour after hour of the same work is what you need to feed your family. And you’re missing school to do it.
I’m not sure that students will intuit the difference between what we did and what migrant farm workers do; neither the time we put in, nor the effort we expended were anywhere near equivalent.
I think making that distinction is important. Recognizing what migrant workers do, many who are the same age as my students, might make the point of what organizations like Heifer and Human Rights Watch are trying to do better than just talking about it, or simulating it, in the classroom.
I think it might make a big difference to hear the voices of these workers.
So I’ll show the HRW video advocating for the CARE Act to reduce child labor among teen migrant workers, and see if it has an impact.
Excellent demonstration of physics using popsicle sticks. Lots more here, including on how to make popsicle stick bombs and snakes (basically the tension of the structure gets released to create the movement).
One of the first things we learned at Heifer was the process of group formation. It was also one of the last things they talked about so it must have been pretty important.
The four steps are:
Forming: When the group first gets together, people tend to be cautious with one another. But because they’re so careful with what they say and what they do, newly forming groups don’t usually get much done.
Storming: Now the barriers start to break down as individual personalities manifest themselves. People start speaking up. A lot. They become less polite. Conflicts arise. People become accusatory. There’s lots of energy, but because of all the conflict, they still aren’t able to get much done.
Norming: The conflict begins to settle down as the group starts to work out its kinks, as all the individuals begin to adapt to one another. Groups may need guidance to get there because everyone has to stop fighting, but as it usually helps that the group will start to see successes because of successful co-operation.
Performing: A well-functioning group can get a lot done. They’re able to communicate effectively, and take action effectively. Their productivity kicks into high gear and they can accomplish much together.
Not all groups get through all four steps, and every time the group changes, such as when a new member (like a new student) is introduced the groups will need to go through some version of the four steps as they learn to accommodate the newcomer.
A well established culture will help groups adapt to change. This is yet another benefit of multi-aged classrooms, because a healthy classroom culture eases the transition as older students leave and new students come in.
Even so, awareness of the four steps is extremely useful because it helps everyone anticipate that there will likely be some conflict, but that conflict is part of the group forming process and will likely diminish with time.
So you should expect, every year, to have to spend some time group building. Two weeks dedicated to orientation and teamwork is what Betsy Coe’s Montessori Middle School program uses. It’s a fair chunk of time to take out of the year, but because good groups can get so much more done, it’s well worth it to build a good classroom community.
“But I shouldn’t have to do chlorine. Chlorine was extra homework last time. I got Argon. I’ll do Argon. I don’t have to do extra homework today, so I shouldn’t have to do chlorine too.”
“It’s true, you didn’t earn extra work today.”
“So I don’t have to do chlorine.”
“If you do chlorine we’ll have the full set of elements.”
At the Heifer International ranch. Time spent weeding the herb garden. Not much weeding done (by me at least), but much photography. Pretty. A word designed for butterflies.
Butterflies are classified as:
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
References
Maggie Eisenberger, personal communication.
Opler, Paul A., Kelly Lotts, and Thomas Naberhaus, coordinators. 2011. Butterflies and Moths of North America. Bozeman, MT: Big Sky Institute. http://www.butterfliesandmoths.org/ (Version 10/08/2011).