Comments on: Hold the Door/Flatastrophe

Comments on: Hold the Door/Flatastrophe http://joys.net/39466/hold-the-doorflatastrophe/ Bringing Joys and Happiness Fri, 13 Mar 2020 09:48:42 +0000 hourly 1 http://wordpress.org/?v=3.5.2 By: J. R. Thorup http://joys.net/39466/hold-the-doorflatastrophe/#comment-35475 J. R. Thorup Mon, 20 Nov 2017 20:30:48 +0000 http://joys.net/39466/hold-the-doorflatastrophe/#comment-35475 ‘ All three of my kids love it. (Ages 9

]]> By: K. Mallery http://joys.net/39466/hold-the-doorflatastrophe/#comment-35474 K. Mallery Mon, 20 Nov 2017 20:01:42 +0000 http://joys.net/39466/hold-the-doorflatastrophe/#comment-35474 Wonderful mix of math and entertainment

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