Some of you might be old enough to remember "slates"... remember, they were used in schools by students. Or if you're not old enough, maybe you've seen them on Little House on the Prairie or Anne of Green Gables or something similar. They looked something like this...Students had chalk and they would do their sums on their slate boards, erase them with a damp cloth and then do some more. They could practice their writing and then erase it and try it over again. No wasted paper (paper was expensive back then)...
That was... oh... how long ago... 70, 80, 90 years ago?? Something like that... and it was a good system, a natural system... Slate is a stone... the frame was wood (trees) and the chalk was... well... chalk... another stone. They could last a very long time as well... unless someone broke one over a student's head (didn't Anne of Green Gables have a temper?).
The idea is this... it has a screen that students can use with a plastic pen-like scribe tool.. They can write their sums on it... and then with a flick of that button at the top, erase everything. They can practice their writing on it... and then erase it. It saves on paper... which is a big expense in schools nowadays.
The whole Edmonton school district is apparently going with Boogie Board Tablets... yes they are... What's it made out of? Probably a lot of plastic and metal and glass... Quite expensive too...
What goes around... comes around... Back in the days of slate, paper was expensive and scarce. Nowadays paper is everywhere, but so much use means it is expensive... and hard on the environment... But what happens to a dead-Boogie Board??
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