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edited Jul 28, 2015 at 22:39

You could hang posters of the 17 wallpaper groups, or the 230 space groups, hoping their presence will engender wonder and generate questions.

^{([17 Wallpaper Groups](http://www.mjsd.k12.wi.us/archive/mhs/depts/math/teachers/christensen/17wallpapergroups.html).)}

^{([230 Space Groups](https://crystalsymmetry.wordpress.com/2014/08/15/the-space-group-list-project-as-a-poster/).)}

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created Jul 28, 2015 at 12:33

You could hang posters of the 17 wallpaper groups, or the 230 space groups.

^{([17 Wallpaper Groups](http://www.mjsd.k12.wi.us/archive/mhs/depts/math/teachers/christensen/17wallpapergroups.html).)}

^{([230 Space Groups](https://crystalsymmetry.wordpress.com/2014/08/15/the-space-group-list-project-as-a-poster/).)}