Школа179:
/Физика
/
/Физика / 7 Б
/20100224
Along the paper faster than the paper
Under the ruler faster than the ruler
Under the ruler 2: the ground moves
Under the ruler 3: tilting the ruler
Along the paper faster than the paperUnder the ruler faster than the rulerUnder the ruler 2: the ground movesUnder the ruler 3: tilting the ruler