IPC in 2nd grade-state of matter experiments!/ IPC w 2 klasie- eksperymenty ze stanami skupienia!
IPC in 2nd grade-state of matter experiments!/ IPC w 2 klasie- eksperymenty ze stanami skupienia!
21.4.2017

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Learn from yesterday, live for today, hope for tomorrow. The important thing is not to stop questioning.

Albert Einstein