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Effective Use of Technology In the Classroom?
postermmxvicom writes "I remember in college I had one professor who, in addition to being a great teacher, really took advantage of the technology in the classroom to illustrate the concepts for Calculus and Linear Algebra. Well, now I am the teacher. I teach Algebra, AP Calculus, and Physics in high school. This year I have gotten a tablet and a wireless projector. Now I can write on my tablet instead of the board, as well as use other applications. I want to utilize this tech effectively for teaching. Would you please share how you have seen technology effectively used for Math and Physics — either specific software or how that software was used (specific or general)?"
It is a interative screen-whiteboard with real-world physics. It's kinda hard to describe without a movie.
I try to use Mythbusters sub-episodes every so often as teaching tools. As most of us know, it's pretty entertaining and, while a little too seat-of-your-pants to serve as rigorous science, it definitely captures the scientific spirit and frequently inspires teachers and students alike. We'll typically watch some part of an episode, discuss the principles involved in the myth, and try and do some calculation related to the episode (e.g. number of ping pong balls to lift a boat off the bottom of the bay, terminal velocity of a penny, etc.). With your setup, you can nicely embed the parts of the video into a presentation then use the tablet to lead a real-time discussion of various topics of interest. As you probably know, there are many nice physics videos out there which can be used in this way. I also can suggest using a nice plotting calculator with your setup to quickly demonstrate ideas like Taylor expansion, Fourier decomposition, basic plotting, etc.
There is some software available out there that will analyze video motion using basic mechanics tools (CM motion, rotational motion, vectors, motion diagrams, position versus time, etc.). You give it a few anchor points on the real video capture and can step it through the motion but with all the vectors and graphs superimposed. Although it is a cool idea, sadly, the version I tried was old quite clumsy (made more clumsy by the laptop/AV setup). However, with your tablet and wireless, you may have more versatility if updated software exists.
There are several intriguing student grading/evaluation systems out there that use bar codes (for example, here). I know at a glance this sounds rather sinister and 1984-ish, but with student-customized bar codes (not tattooed on their foreheads, but rather printed on their papers), I think this can be used quite well to facilitate quick grading of quizzes with real-time feedback and histograms, class participation credit, and other creative classroom data organizing solutions. This could be made especially effective with the mobility provided by your tablet and wireless.
Anyway, all the best with your pending projects.
i\hbar\dot{\psi}=\hat{H}\psi
He could save his time and the students by prepping his examples, or whatever else he'd write on the board, before school. Then just pull up a saved slide so he doesn't have to spend all that time rewriting it for each class period. Consistent fonts would also mean better readability by the students. Color coding or other text attributes could also contribute to that. Animations would be cool, and maybe explain things better, but I don't think he'd be getting that far into it.
Well powerpoint is the only thing usefull, my teachers ever used.
Invest in some old fashioned hardware. Hands-on physics teaches a lot of concepts to those who don't quite grasp concepts published in a book. Examples are a bicycle to teach force/displacement/speed relationships. The classic is standing a bike up and asking if the pedal low to the floor is pushed to the rear of the bike, will the cranking force move the bike foreward or will the gearing cause the bike to move backwards in the direction of the force and why?
Students that grasp these concepts early on are the ones to understand the conservation of energy and entropy. They will understand why you can't use a high speed motor of say 1 HP to drive a 1 KW generator fast enough to power the motor and have a few hundred watts of power left over. An electrical load on the generator provides a mechanical load to the motor. This is not over unity creating a perpertual motion machine.
Props such as a hand cranked generator or bicycle driven generator that can be loaded make a serious impression to early students. Cranking 60 watts is work. 300 Watts sustained is very serious work. This leads to an understang of torque/speed/horsepower relationships. Torque or speed is not power. Feeling power generation is better than most any PowerPoint presentation.
After the mechanical presentations, then go into lecture and detail such as going over an electric bill and figuring the typical days power use and how much work is delivered for a dollar.
Power economy and the hand cranked PC scale now come into view. Hand cranking your typical home PC or laptop and Monitor are now seen as beyond pratical. Energy conservation to fit the hand cranked energy budget now become a prime design consideration for future engineers instead of how to hand crank existing tech.
Hand cranking a 2 watt laptop is possible as well as a 60 watt laptop, but the 60 watt laptop isn't pratical as all the time will be spent cranking quite hard.
You were cheated in your physics class if they didn't do the blowgun/falling ball demo or used air hocky tables to show center of mass of spinning objects and conservation of momentium, elastic and inelastic collisions. In the 1970's we shot a lot of film of this on an air hocky table and took measurements from the photographs to calculate displacement of the objects photographed under a strobe light. The hands on stuff was the best.
The truth shall set you free!
I have learned more math and physics as a result of self-guided programming than I ever did in school. I remember a few years ago I was working on a simple vector graphics system for a video game I was making, and I finally understood the point of converting between cartesian and polar coordinates. Then I added physics to the program and picked up ideas like velocity along the angle of impact vs. the tangent. Recently I was working on a program to find color differences, and had to scale certain 0-1 values into a curve by using various exponents.
These are all simple things that I should have picked up in school. Things which I'm sure were explained but without any practical (or even impractical) application. So I only had the vaguest recollection that they were even possible. But the moment I encountered a programming problem that I wanted to solve, yet required this kind of knowledge, I vacuumed it up.
That may not be what you mean by "using technology" in the classroom, but it's what came to mind for me.
Cheers.
I'm both enthusiastic as well as sceptical (and wrote and talked about it [PDF]). Here are some major points for me:
Congratulations: you've got some of the potentially most interesting classes to use technology in - but that potential will be wasted if you just use the tablet and projector to show Powerpoint slides.
When you're designing your class, think: what can the tablet do that would be useful that could not have been done without it. Powerpoint fails this test miserably - an overhead projector would do just as well.
Here are some possible uses that do pass the test:
One last suggestion: don't hog the tablet - let your students use it too. You can set up a problem, and invite students to come up and work through it individually or in groups, showing their thought process to the rest of the class. The students will learn much more, and everybody - including you - will have a lot more fun.
Good luck!
As some see it, the main reason blackboards are used in math/physics is to get the teacher to slow the hell down. The only outcome of technology is teachers who fly through equations too fast for students to copy them.
The Physics Education Group at Kansas State University has made a set of tools for teaching quantum mechanics. Some of them involve computer simulation of wave packets, etc. This helps for visualizing the (rather complex) ideas behind quantum mechanics. I interacted with these tools while taking an undergraduate physics course (intended for non-majors). They really worked well.