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Comments

Author Comment Last activity Moderation
sciencetoolbar "liz "Hi! This is a really lovely activity. Would you be able to add a bit of description at the top so that people know why they would want to und..." | Read more » almost 2 years ago
sciencetoolbar " david_uwi "When looking at this the only thing that comes to mind is WHY?" educational purpose : small, simple & powerfull layout of an AC ..." | Read more » almost 2 years ago