My Facebook comment on the #classroomchallenge
https://mobile.facebook.com/story.php?s
tory_fbid=1716732655127745&id=100003730826549&refid=17&ref=opera_speed_dial_freefb&ft=top_level_post_id.1716732655127745%3Atl_objid.1716732655127745%3Athrowback_story_fbid.1716732655127745%3Athid.100003730826549%3A306061129499414%3A2%3A0%3A1517471999%3A1554179663448673296&tn=%2As-R&_rdr