Showing posts with label Engineering. Show all posts
Showing posts with label Engineering. Show all posts

Saturday, June 12, 2010

Sometimes I Forget Who I'm Talking To

On Friday, I decided to give my students a little creative problem solving exercise. The lesson previous, I had gone over polarity and density of compounds, using a density column of corn syrup, water, and oil, as a means of segueing into Chemistry (thank you to Angela She for the lesson plans). I thought this would lay a great foundation for a problem solving exercise that's quite relevant: Solve the BP Oil Crisis.

I am by no means pioneering in this endeavor, as it is a well known secret that kids can be the best problem solvers, since their creativity isn't hindered by social rationalizations and self-consciousness. Considering a truly viable solution has yet to be found (well, it depends on who you ask. I have my own opinion), I thought it wouldn't hurt to let 89 elementary school students have a stab at it.

I presented each group with two problems: how to seal the broken pipe, and how to handle the oil slick. I gave them all the stats: how far down the hole is (around 5,000 ft) and how far out (26 miles) as well as other pertinent data, and told them to go for it.

I ran into a bit of a problem when describing the current state of the fractured well. I tried to pull out all the technical jargon and explain it to them simply. I said: "Okay, there's a big hole in the middle of the ocean and it's spewing all this crabcakes out into the ocean..." Except I didn't say crabcakes. It's weird, now, for me to think of crap as a bad word, since I use it so often. But the glare from my mother who was working in the back told me that teachers should not use that word around 3rd graders. Surprisingly, none of the kids seemed to notice, nor did they make a big fuss that I swore. So either they didn't notice, or they've become desensitized to the word. I think I'm going to test this out by swearing more. A list of your favorite expletives and ideas on how to work them into a science lesson would be much appreciated from the readership.

So back to the lesson. I was pleasantly surprised by some of the ideas. Most decided to just shove a bunch of crap into the hole to plug it up. Some came up with the solution BP is currently employing: sticking a narrow tube into the hole to siphon off some of the leaking petroleum.

The second problem, how to deal with the oil slick, drew more creative solutions. My favorite called for a fleet of thousands of robotic fish to swim around and eat up the oil. I asked the student how she was expecting to pay for thousands of high-tech robots, to which she replied "my dad will pay for it". Another called for a giant corral type thing to scoop up all the oil. Some of the students actually used what they had learned previously about density and polarity, and suggested collecting the oil and seawater in a tanker, and decanting the oil from the water.

My biggest surprise of the day came from E----, a special ed. student that has his own para-professional aide to monitor his behavioral issues. This student, I had been warned, was known to assault teachers, in addition to the usual host of behavioral problems. However, he was perhaps the smartest student of the day. He came up with maybe 9 different solutions, each well thought out and at the very least plausible, solutions I think BP would have liked to hear. I've been told that many behavioral problems arise from a lack of stimulation, that the child becomes bored and begins to act out. Perhaps that's what caused E----'s uncharacteristically well-behaved performance on Friday. I'm going to keep an eye on this. Very intriguing.

I've been trying to drive home everyday from work, since I have yet to get my license (I'm going to renew my permit for the 3rd time later this month). I'm not the best driver, yet, but I'm....competent. Usually. My dad always yells at me, telling me going at the speed limit is too slow. As a result, I've developed a bit of a lead foot, and a waning patience. As we were driving home from the school, we approached a 4 lane intersection. In the corner of my eye I could see someone crossing the street. I figured I best just speed through the intersection, since the pedestrian was taking forever to cross the street. I guessed I missed timed it a bit because I almost ran them over. I could see them not 3 feet away from me as I sped past them. And as their figures passed my window, I saw who I had almost run down. An old woman. And her granddaughter. In a wheelchair. With a cast. You can't make this stuff up. A few seconds later, I would have hit the world's best sympathy case. Lesson learned, patience is a virtue. Or if you do hit something, drive away before they can read your plates. Haha, I'm just joking. There'd be no witnesses left.

Next week marks a whole lot of Chemistry. Not only a lot of my favorite science, but another 4 day week, since Friday we're taking the kiddies to Ice Palace, Hawaii's only skating rink. I haven't ice skated in nearly 8 years, and even then I wasn't very good. I mostly clung to the walls and slowly drifted from the natural rotation of the earth. However, this time I'm supposed to be chaperoning 89 elementary school kids, who are all faster and more athletic than I am. And they know it.

Tuesday, June 08, 2010

They Call Me "Mr. Science": Bottle Rocketry Adventures

Ah, what fine Hawaiian afternoon...

...The perfect day for Bottle Rocketry.
The children were busy at work, putting the last touches on their rockets.

Some were working harder than others, but hey, everyone has to learn to deal with group dynamics.

3 of the 5 groups launched their rockets today (due to stupid scheduling issues by the administration), and it went off fantastically. I for one was very pleased with the experiment, but I know for a fact the kids loved it. The biggest letdown of the day was when I told them we couldn't do the same thing again tomorrow (which is when we'll start Chemistry, tee hee!).

Some of these kids are the most precious things in the world. Everyday, we have them write in their journals what they learned today. One of the boys (I can't remember his name, he's new) showed me his journal which said, and I quote:
Today we flew rockets. Our rocket came in third. I was disappointed.

But, he told me personally he had a lot of fun, and it was the best day of his life. So, I guess things even out in the end.

I was only able to film one of the younger groups, so take a gander:
*EDIT: Video Removed*


It's becoming easy to spot the kids with potential. Joachim de Posada gave a remarkable TED (Technology, Entertainment and Design, www.ted.com) talk about a social psych study conducted in Brazil, which tried to relate self discipline with future success, The Marshmallow Test. The study was simple, it placed a child in a room with a marshmallow. The child was told, if you don't eat the marshmallow when the guy leaves the room, you'll get two when he comes back. Of course, as soon as the guy left the room, a lot of the kids instantly snatched up and gobbled down the marshmallow. But others waited. The study followed these kids throughout their schooling, and found a clear correlation between academic success and the self-restraint to not eat the marshmallow. Those who ate the marshmallow developed criminal records early on, and such and such.
Watching these kids make their rockets poses a similar factor. When cutting the cardboard fins and taping the various pieces on, some kids just slap things together, just trying to finish their rocket. But others were very meticulous, making sure each string of the parachute was the same length, and making sure the fins were symmetric and taped on nicely. I think it's this patience and attention to detail that will develop into productive and beneficial study and work habits later in life. I'd be interested to see if there's any correlation.

Also, the children are still having issue with my name, as I suppose Sakimoto is a bit of a mouthful (in all honesty, I would stumble over my own name a times during Speech and Debate). Those who can't remember Sakimoto have either tried and guessed "Mr. Taketono", or my favorite, have begun calling me "Mr. Science".

Sunday, June 06, 2010

On Building A Bottle Rocket Launcher

So I had this crazy idea that I would make bottle rockets with my kids this coming week. I fondly recall doing this in 7th grade, and the excitement and enthusiasm this project brought to everyone involved. Then I started planning out the nitty gritty.

One thing I failed to consider fully was how to actually launch these rockets. In 7th grade, the launch pads had been around the school for several years, made by some ambitious teacher years ago. I had no such resources, and set about to making my own launch pad.

I've never been one to look at pre-made plans devised by others, preferring to rough it out, and find my own way to doing things. So I set about designing my own launch pad. After some thought, I came up with these rather detailed blueprints on the back of a piece of 3/4" plywood:
However, I had failed to take into account a rather crucial element: I had no way to pressurize the rocket. I had an electric pump suited to fill up car tires, but this would not work. What would the children do as I filled up their rockets with a flip of a red switch? I would rather have the kids themselves pump up their rockets, since that's part of the fun. No, I would need a manual pump for this project. A manual pump I did not have. After debating with myself on whether to shell out the $10.23 for a Bell Bike Pump, since that amounts to an strenuous hour of yelling, running, and shepherding children, I bought the pump.

Now, being the thrifty fellow I am, I have never bought construction materials. I have built many many a things, ranging from chairs to a full size working ballista (it shot tennis balls), but have never paid for lumber or nails, or tools, for that matter.

My grandpa was a general contractor, and as such, left behind a large number of tools and materials after he passed away. Although my dad's parents lived with us for the last 15 years, I have never really known them on a terribly personal level. For whatever reason, I only got to know my grandpa after he passed away a few years ago, and of all ways, through his tools. He salvaged everything, from light switch cover panels to roofing nails. There's something about the way he stored all the odds and ends, nuts and bolts in old Macadamia nut cans, or the abundance of the stiff white nylon twine that he used to tie everything together with, that seemed oddly familiar, and oddly familial. I know it sounds corny, but I do feel a connection to him when I build things. With every turn of the hand-powered drill, with every stroke of the vintage Japanese saw, I can imagine my grandpa doing the same thing 50 years ago, back when Hawaii wasn't even a state, building not only houses, but a life for his family. I do feel proud, in an odd way, that I'm carrying on one of the few legacies our family has, even if I'm using it to build a rocket. My grandma gives me strange looks when she sees my projects, but she gave those same looks to my grandpa when he was alive, so I suppose not much as changed between generations.

Back to the rocket launcher. After 4 hours of Junkyard Wars-esque building, I finally assembled my rocket launcher. After hours of looking for a nut that would fit this one bolt, and trying to cut custom metal brackets, I produced this monstrosity:Though not the prettiest thing in the world, it works:

Tomorrow I'll do an actual test shot, since 9:00 at night is not the time to go to the park to try out such things.

Yup, four hours for something I could have bought online, or just decided it was too much work for a summer class I get paid way too little for. There are some moments when I have to stop and ask myself why I bother putting so much effort into these things.

My mom, being the superstitious type that she is, drew my attention to today's horoscopes for Aquarius:

You succeed because you work hard, and the tenacity and sense of purpose you bring to your work is rapidly becoming the stuff of local legend. A significant reward approaches.

Interesting, though such things are pure hokum. I'm taking the horoscope to mean some nice parent will bring me a box of cookies one day. Or a big wad of cash. One can only hope.

Truth be told, I'm really still a little kid at heart that likes to make cool things. This class is as much for my own amusement as it is for the kids. And plus, having my own bottle rocket launch pad will make this a very fun summer.

Friday, May 14, 2010

Mission Statement

Science is amazing, and is one of the few links we have to an bright and prosperous future. But such a future is not carved out over night, nor is it a future ensured by the work of the present generation. No, such a world will be crafted by the progeny to follow, some of who are beginning their first forays into formal education.

It is at this point that we must provide children with the boundless opportunities afforded by such a diverse, complex, and intriguing world. We must expose them to science and engineering as wondrous tools for problem solving, collaboration, and satisfying pure curiosity.

As students progress through their education, they often become bogged down in the mire of the intricacies of mathematical calculations, nomenclature, and the nitty gritty of science, and become discouraged. But if a true and fundamental love of the sense of discovery, of innovation and insight is planted early on, even the toughest teacher, class or exam won't be able to uproot their will to persevere.

This Blog will serve as a repository of lesson plans and teaching materials related to the Summer Concepts 2010 course for Elementary School children (K-5), plus related science materials of general interest. The course will cover an array of scientific disciplines: physics, chemistry, biology, environmental science, mechanical engineering, among others.