You have many options. Have a look at my web site and download:
*** Micro Shadows - free, in color, in pdf, and says how to built an horizontal sundial for anywhere and includes the tables. *** Simple Shadows - free, color pdf, and is the same as Micro Shadows except it adds why it works. My web site is: www.illustratingshadows.com Also, optional material would be: *** Sundials not to buy - with pictures, showing the garbage on Ebay etc some of which can never work regardless of adjustments. *** Reverse Engineering - what to do once you bought a dial in a store. Also Carl Sabanski's web site has a ton of stuff you might want to browse through. If the children are computer literate, check my programs for TurboCAD (vbs), DeltaCAD, Visual Basic, java, FORTRAN, Pascal, Basic, and except for the two CAD systems, all have free and easy to use compilers, and my web pages say how to download those compilers. Simon Wheaton-Smith --- Andrew Pettit <[EMAIL PROTECTED]> wrote: > About five years ago my eldest grand-daughter was > given a home-work > project by her teacher at a school many miles away > from me in the > Thames Valley England. This was in the last week of > the summer term. > > The project consisted of a taking sheet of paper > with a circle and > right-angled triangle printed on it and a few > (random) instructions > about cutting bits out, sticking the triangle to the > circle and using > it to tell the time. Nothing about the properties of > the triangle or > the directions in which things should point etc.! > > Certainly nothing about what magic enabled this > device to tell the > observer the time ~ leave alone the science > involved! > > I was furious and contacted the school but, by then, > they'd finished > for the summer and I was fobbed off with all kinds > of excuses. > > Well, I thought, put it down to experience. It won't > happen again. > > W - R - O - N - G !!!!!!!!!!!!!!!!!!!!!!!!!!!!!! > > Next year her younger brother was set the same task. > > Now, there is a third child in the family that goes > to the same > school. His name is Oscar and guess what next year, > when he is 8, he > is likely to be set the same pointless exercise. > It's enough to turn > any kid away from science. > > I am passionate about my grand-children and > pointless homework raises > my blood pressure! > > I would be perfectly happy to go into the School to > explain how a > sundial works and to set up a meaningful project ~ > though it would be > better if there were a few of us. > > Are there any offers of help and any advice on > material to use? > > This will help Oscar and lower my blood pressure but > the material > could also be made available via this mailing list > to help other > Oscars in other parts of the world. > > I look forward to hearing from you. > > Andrew > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > e-mail: [EMAIL PROTECTED] > > Postman Pat: 3, Lucastes Road, HAYWARDS HEATH, West > Sussex, RH16 1JJ, > ENGLAND > > Tel. UK: +44 (0)1444 453111 > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > > --------------------------------------------------- > https://lists.uni-koeln.de/mailman/listinfo/sundial > > --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
