> R Strausz says: > >Joe, I can't speak for others but I read things like > these as a source for teaching ideas. > > I can see how the glass filling exercise could lead > to interesting discussion of the relevant math and > training of one's analytical skills. For example, > supposing the first given flask shape, suppose the > transition from sloped to straight up and down sides > is perfectly sharp: what does the height/time graph > reflect precisely at that point? > > But, *that* discussion or anything similar is not > found on the blog at all. Is it simply to be assumed > everyone can handle *that* discussion perfectly well? > > > Cheers, > Joe N I think that teachers who aren't comfortable with that discussion would be less interested in this approach. Please understand that I am not advocating this for everyone, but I am urging everyone to consider it and think if there are methods that will improve teaching and learning.