You call it playing, we call it doing experiments from the German Physics Society
http://www.physik-im-advent.de
A Physics Advent calendar in which every day you will discover a new physics experiment and exciting tasks with the video clip.
With “PiA – Physics in advent”, we created a special and unique kind of advent calendar: a physical advent calendar. We introduce young scientists, and everyone who has fun with it, to 24 simple and yet ingenious experiments and physics puzzles. They will arouse interest in doing experiments for yourself and ignite excitement within any observer.
From 1st to 24th December 2015, we present a little experiment as video clip every day. You can do the experiment yourself at home and answer the question on our web page throughout the day before seeing the solution video the next day.
Sign up as a class, individuals or adults. The experiments are designed from grades 5-10.
Merry Christmas.