4 ms·
When I TA'ed in Germany, every classroom had a sink, a sponge and a squeegee, so you actually cleaned the board every time instead of smearing it. It was great.
by taejo 7y ago
When I TA'ed in Germany, every classroom had a sink, a sponge and a squeegee, so you actually cleaned the board every time instead of smearing it. It was great.