[{"data":1,"prerenderedAt":145},["ShallowReactive",2],{"project-3726217":3},{"id":4,"name":5,"line":6,"line_source":7,"title":8,"url":9,"domain":9,"maker":10,"posted_at":11,"year":12,"points":13,"comments":14,"rank_in_year":15,"shown_in_year":16,"top":17,"tier":18,"category":19,"subcategory":20,"format":21,"keywords":22,"reception":27,"sentiment":9,"stance_mix":28,"scored_comments":14,"aspects":31,"strip":34,"post_text":37,"what":38,"said":70,"maker_in_thread":96,"shape":98,"grid":101,"attempts":106,"same_week":107,"maker_shows":136,"maker_hidden":137,"reader_version":138,"card":139},"3726217","The Fourth Dimension","Learn how to navigate the 4th dimension","title","Show HN: Learn how to navigate the 4th dimension ",null,"joshu",1332191270,2012,12,2,1206,1677,72,"shown","learning_science","interactive math education","mobile_app",[23,24,25,26],"fourth dimension","ipad app","coordinate spaces","math education","quiet",{"positive":29,"neutral":30,"mixed":29,"critical":30},1,0,{"pricing":32,"design":33},{"positive":30,"critical":30},{"positive":29,"critical":30},[35,36],3,5,"My coworker Drew (http:\u002F\u002Ftraipse.com\u002F) wrote a beautiful iPad app to teach about the fourth dimension (coordinate spaces and such.)\n\nhttp:\u002F\u002Ffourthdimensionapp.com\u002F",{"problem":39,"audience":49,"pricing":58,"motivation":62,"time_to_build":9,"stack":67,"openness":68,"stage":69,"team_size":68},{"value":40,"source":41,"evidence":42},"Hard to grasp the fourth dimension and coordinate spaces","inferred",[43,45],{"id":44},"post",{"id":46,"by":47,"text":48},"3727536","craze3","Wow, this has got to be the best way to learn about the fourth dimension! There's hardly any resources that are this interactive for such a cause. Also,…",{"value":50,"source":51,"evidence":52},"Students and learners interested in geometry; schools with iPad programs","commenter",[53,57],{"id":54,"by":55,"text":56},"3727950","sumukh1","That is pretty cool. Didn't get it as I don't actually need it, but my advice is to put this in front of Schools. Education sales could really help. To sell it to schools, Drew…",{"id":46,"by":47,"text":48},{"value":59,"source":51,"evidence":60},"$2.99 on iTunes",[61],{"id":54,"by":55,"text":56},{"value":63,"source":64,"evidence":65},"Coworker built it to teach the fourth dimension","maker",[66],{"id":44},[],"unknown","launched",{"praise":71,"objections":80,"requests":85,"questions":90,"alternatives":91},[72,76],{"value":73,"source":51,"evidence":74},"Interactive and a great way to learn the fourth dimension",[75],{"id":46,"by":47,"text":48},{"value":77,"source":51,"evidence":78},"Looks pretty cool",[79],{"id":54,"by":55,"text":56},[81],{"value":82,"source":51,"evidence":83},"Commenter does not personally need it",[84],{"id":54,"by":55,"text":56},[86],{"value":87,"source":51,"evidence":88},"Add practice problems for schools",[89],{"id":54,"by":55,"text":56},[],[92],{"value":93,"source":51,"evidence":94},"Wikipedia article on four-dimensional space",[95],{"id":46,"by":47,"text":48},{"comments":30,"answered":30,"key":97},[],{"commenters":14,"max_depth":29,"maker_replies":30,"first_comment_mins":99,"lifespan_hours":100},334,8,[102,104],[54,30,35,103,55,30],"project\u002Fmixed\u002Fpricing",[46,29,36,105,47,30],"project\u002Fpositive\u002Fdesign",[],[108,113,118,123,128,131],{"id":109,"name":110,"points":111,"category":112},"3724796","Pinwords",146,"creative",{"id":114,"name":115,"points":116,"category":117},"3732677","WireOver",120,"productivity",{"id":119,"name":120,"points":121,"category":122},"3728360","Ham",87,"dev_tools",{"id":124,"name":125,"points":126,"category":127},"3714509","TheReelBox",81,"consumer_social",{"id":129,"name":130,"points":17,"category":127},"3720178","Rabblr",{"id":132,"name":133,"points":134,"category":135},"3734416","similarityapi.appspot.com",54,"data",4,false,"v2",{"id":140,"name":5,"line":6,"ai":137,"cat":19,"year":12,"points":13,"comments":14,"rec":27,"s":9,"top":17,"kw":141,"maker":10,"domain":142,"tier":18,"attempts":30,"strip":143,"url":-1,"mix":144,"praise":73,"objection":82,"sub":20},3726217,[23,24,25,26],"","35",[29,30,29,30],1793990879683]