[{"data":1,"prerenderedAt":381},["ShallowReactive",2],{"project-2097429":3},{"id":4,"name":5,"line":6,"line_source":7,"title":8,"url":9,"domain":10,"maker":11,"posted_at":12,"year":13,"points":14,"comments":15,"rank_in_year":16,"shown_in_year":17,"top":18,"tier":19,"category":20,"subcategory":21,"format":22,"keywords":23,"reception":27,"sentiment":28,"stance_mix":29,"scored_comments":33,"aspects":34,"strip":44,"post_text":46,"what":47,"said":77,"maker_in_thread":209,"shape":217,"grid":220,"attempts":347,"same_week":348,"maker_shows":36,"maker_hidden":373,"reader_version":374,"card":375},"2097429","Math.ly","Math.ly (MVP) Do you think there's a market for something like this?","title","Show HN: Math.ly (MVP) Do you think there's a market for something like this?","http:\u002F\u002Fmath.ly","math.ly","dustyreagan",1294862570,2011,28,49,387,1097,36,"shown","learning_science","math practice","web_app",[24,21,25,26],"algebra practice","equation generator","math quiz","mixed",-0.199,{"positive":30,"neutral":31,"mixed":30,"critical":32},4,13,9,30,{"idea":35,"design":38,"pricing":40,"performance":42,"execution":43},{"positive":36,"critical":37},3,2,{"positive":39,"critical":36},0,{"positive":41,"critical":39},1,{"positive":39,"critical":41},{"positive":39,"critical":36},[36,39,36,36,36,39,36,39,45,36,36,41,41,41,36,41,39,36,41,39,36,36,45,39,45,36,36,39,39,39,36,41,39,41,41,41,36,39,39,45],5,null,{"problem":48,"audience":55,"pricing":61,"motivation":70,"time_to_build":46,"stack":74,"openness":75,"stage":76,"team_size":75},{"value":49,"source":50,"evidence":51},"Finding clean random algebra questions to practice with","maker",[52],{"id":53,"by":11,"text":54},"2097461","I know it's backwards to create something, then wonder if there is a market for it. But, I created this site after I tried to find some random algebra questions to practice and…",{"value":56,"source":50,"evidence":57},"Students practicing math, and teachers generating quizzes",[58],{"id":59,"by":11,"text":60},"2097507","My thoughts are that it would be used by students for practice, and possibly by teachers to generate quizes. Excellent feedback on the free-form text input, and rational answers.…",{"value":62,"source":50,"evidence":63},"Free random problems, with a planned pro account offering video solutions",[64,67],{"id":65,"by":11,"text":66},"2098534","I think I'd like to have free random problems, and a pro account would include problems that have a video explaining that particular problem's solution. Something along those…",{"id":68,"by":11,"text":69},"2097537","I was thinking about creating a paid service like you're describing. Free random questions for all, but a pro account would get explanations on how to solve the particular…",{"value":71,"source":50,"evidence":72},"Maker could not find clean algebra practice questions and built a site to fill that need",[73],{"id":53,"by":11,"text":54},[],"unknown","prototype",{"praise":78,"objections":102,"requests":133,"questions":168,"alternatives":180},[79,91],{"value":80,"source":81,"evidence":82},"Useful for students and homeschoolers; suggested to homeschool lists","commenter",[83,87],{"id":84,"by":85,"text":86},"2098225","Mz","I've emailed it to a couple of homeschool lists I belong to. Homeschoolers love stuff like this. Good luck with it.",{"id":88,"by":89,"text":90},"2097528","pkulak","I could see this being useful, actually. Flesh it out with a bunch of options (no-variables, linear, quadratic, parens, constant ranges, number of terms, etc) and it could really…",{"value":92,"source":81,"evidence":93},"Would pay for a paid explanation or video service",[94,98],{"id":95,"by":96,"text":97},"2097601","mindcrime","That sounds pretty awesome to me. Build it and I'd probably sign up.",{"id":99,"by":100,"text":101},"2098195","chad_oliver","I'm a student studying engineering. This year, I did really well in physics because my lecturer had given us a list of 40 questions from the textbook that covered everything we…",[103,118,125],{"value":104,"source":81,"evidence":105},"Pages load slowly and symbols flash or disappear in some browsers",[106,110,114],{"id":107,"by":108,"text":109},"2097557","SHOwnsYou","While the font gives it a real math textbook like feel, they take forever to load. I reloaded a few times before giving up and going to a new tab. It wasn't until I went to close…",{"id":111,"by":112,"text":113},"2097613","achompas","Cool idea. One thing: 1. When the page loads, the question & answers flash for a second then disappear. Using Firefox 3.6.13 on Windows. Otherwise I have the same suggestions as…",{"id":115,"by":116,"text":117},"2097588","rednum","There are some problems with displaying in firefox 3.6.13. The symbols appear for a split-second, then disappear for a few seconds and then reappear again.",{"value":119,"source":81,"evidence":120},"Notation like x for multiplication is confusing",[121],{"id":122,"by":123,"text":124},"2097879","ilconsigliere","I like the idea, however my first question was a bit confusing (not the math!): \"2x - 2 + -1x + 2 = 5x2 - 4\" Is it necessary to use 'x' for multiplication? It's a bit confusing…",{"value":126,"source":81,"evidence":127},"Questions are too hard or intimidating at first",[128,129],{"id":107,"by":108,"text":109},{"id":130,"by":131,"text":132},"2097516","AndrewWarner","Not sure what the market is for this, but if the questions were simpler, I'd play @ my desk while eating my lunch. A few suggestions: - find a way for me to challenge my friends…",[134,146,154,161],{"value":135,"source":81,"evidence":136},"Multiple skill levels or difficulty that adapts",[137,138,142],{"id":130,"by":131,"text":132},{"id":139,"by":140,"text":141},"2097977","rgarcia","> Offer multiple skill levels. You could also start with easy questions and have it slowly adapt to harder\u002Feasier questions as you get questions right or wrong (maybe accounting…",{"id":143,"by":144,"text":145},"2097657","petervandijck","Awesome. Should be easier at first and then, instead of just a \"Next\" button, you could have 2 buttons: \"next\" or \"next but harder\".",{"value":147,"source":81,"evidence":148},"Let friends challenge each other and boast about streaks",[149,150],{"id":130,"by":131,"text":132},{"id":151,"by":152,"text":153},"2097725","Dove","I think it would be more compelling with a metagame offering an incentive to play. Edutainment games in which solving the equation slays the zombie are generally lame, but…",{"value":155,"source":81,"evidence":156},"Free-form answer input instead of multiple choice",[157],{"id":158,"by":159,"text":160},"2097453","jey","Who's the target audience or what's the prototypical use case? Also, I'd switch it from multiple choice to having a free-form text input field that allows the common ways of…",{"value":162,"source":81,"evidence":163},"Step-by-step help or explanations for wrong answers",[164,165],{"id":107,"by":108,"text":109},{"id":166,"by":96,"text":167},"2097502","I could see something like that being useful. Would be nice if you could select a category for \"what kind of question\" do you want. I'd also like to see immediate feedback after…",[169,176],{"value":170,"source":81,"evidence":171},"What is the business model?",[172],{"id":173,"by":174,"text":175},"2097647","acangiano","What's the business model? Or do you plan to keep this a pet project of sort?",{"value":177,"source":81,"evidence":178},"Who is the target audience?",[179],{"id":158,"by":159,"text":160},[181,188,195,202],{"value":182,"source":81,"evidence":183},"Khan Academy exercises",[184],{"id":185,"by":186,"text":187},"2097550","patrickaljord","khan has something similar http:\u002F\u002Fwww.khanacademy.org\u002Fexercises?exid=linear_equations_1",{"value":189,"source":81,"evidence":190},"IXL",[191],{"id":192,"by":193,"text":194},"2097951","pedanticfreak","One way to monetize it is for standardized test preparation. Companies like Kaplan charge an arm and a leg for sample tests. Likewise you could align the questions with common…",{"value":196,"source":81,"evidence":197},"Mathletics and Rainforest Maths",[198],{"id":199,"by":200,"text":201},"2097555","swalberg","If you're going after students, have a look at http:\u002F\u002Fwww.mathletics.ca\u002F and http:\u002F\u002Fwww.rainforestmaths.com\u002F We signed up our kids for a year for ~$200. It was pretty good, but…",{"value":203,"source":81,"evidence":204},"Project Euler",[205],{"id":206,"by":207,"text":208},"2097608","xfs","See also Project Euler http:\u002F\u002Fprojecteuler.net\u002F . Maybe you can use these as advanced captchas?",{"comments":210,"answered":45,"key":211},11,[212,213,214],{"id":53,"text":54},{"id":65,"text":66},{"id":215,"text":216},"2099240","Awesome input! Thanks! :)",{"commenters":218,"max_depth":30,"maker_replies":210,"first_comment_mins":210,"lifespan_hours":219},33,16,[221,223,227,231,233,235,237,238,239,241,242,244,247,250,252,255,258,261,263,266,269,272,274,275,277,281,284,286,289,291,292,294,297,301,303,307,309,310,314,317,321,326,328,330,334,338,340,342,344],[130,39,36,222,131,39],"project\u002Fmixed\u002Fidea",[224,39,39,225,226,39],"2097540","commenter\u002Fpositive\u002Fidea","ZeroMinx",[228,39,36,229,230,39],"2097781","project\u002Fneutral\u002Fidea","mayank",[139,39,36,232,140,39],"project\u002Fneutral\u002Fdesign",[53,41,39,234,11,41],"maker\u002Fneutral\u002Fidea",[173,41,36,236,174,39],"project\u002Fneutral\u002Fpricing",[65,41,39,236,11,41],[99,37,36,222,100,39],[215,37,39,240,11,41],"maker\u002Fpositive\u002Fnone",[151,36,36,232,152,39],[88,30,45,243,89,39],"project\u002Fpositive\u002Fidea",[245,30,36,232,246,39],"2097586","noahlt",[248,30,36,232,249,39],"2097783","Xk",[107,45,41,251,108,39],"project\u002Fcritical\u002Fperformance",[111,253,41,254,112,39],6,"project\u002Fcritical\u002Fexecution",[256,253,41,254,257,39],"2097793","jonpaul",[259,253,39,260,11,41],"2099234","maker\u002Fpositive\u002Fexecution",[199,262,36,222,200,39],7,[122,264,41,265,123,39],8,"project\u002Fcritical\u002Fdesign",[267,264,39,268,11,41],"2098133","maker\u002Fneutral\u002Fexecution",[270,264,36,271,123,39],"2098959","project\u002Fneutral\u002Fexecution",[273,264,39,260,11,41],"2099231",[158,32,41,265,159,39],[59,32,39,276,11,41],"maker\u002Fpositive\u002Fdesign",[278,279,36,229,280,39],"2097546",10,"habitatforus",[282,279,36,232,283,39],"2097623","pbhjpbhj",[185,210,39,285,186,39],"other\u002Fneutral\u002Fnone",[166,287,45,288,96,39],12,"project\u002Fpositive\u002Fpricing",[68,287,39,290,11,41],"maker\u002Fneutral\u002Fpricing",[95,287,45,243,96,39],[293,287,36,229,283,39],"2097612",[295,31,36,229,296,39],"2097547","njs12345",[298,299,39,285,300,39],"2097969",14,"some1else",[206,302,39,285,207,39],15,[304,302,39,305,306,39],"2098279","commenter\u002Fneutral\u002Fnone","sz",[308,302,39,305,207,39],"2099562",[143,219,36,232,144,39],[311,312,41,265,313,39],"2097483",17,"iterationx",[315,312,39,316,11,41],"2097493","maker\u002Fneutral\u002Fdesign",[318,312,39,319,320,39],"2097548","other\u002Fneutral\u002Fidea","Mgccl",[322,323,41,324,325,39],"2097776",18,"project\u002Fcritical\u002Fidea","PaulHoule",[115,327,41,254,116,39],19,[329,327,39,260,11,41],"2099236",[331,332,41,324,333,39],"2097525",20,"pixcavator",[335,336,36,337,144,39],"2097675",21,"maker\u002Fneutral\u002Fnone",[339,336,39,337,11,41],"2098096",[341,336,39,305,144,39],"2098501",[84,343,45,243,85,39],22,[192,345,36,346,193,39],23,"project\u002Fmixed\u002Fpricing",[],[349,354,359,363,366,370],{"id":350,"name":351,"points":352,"category":353},"2088213","3DTin",62,"creative",{"id":355,"name":356,"points":357,"category":358},"2094800","OneFatPig",29,"finance_crypto",{"id":360,"name":361,"points":345,"category":362},"2087598","7courses","productivity",{"id":364,"name":365,"points":343,"category":362},"2082873","my holiday project",{"id":367,"name":368,"points":332,"category":369},"2084819","My Weekend Project","games",{"id":371,"name":372,"points":323,"category":353},"2088673","Precorder",false,"v2",{"id":376,"name":5,"line":6,"ai":373,"cat":20,"year":13,"points":14,"comments":15,"rec":27,"s":377,"top":18,"kw":378,"maker":11,"domain":10,"tier":19,"attempts":39,"strip":379,"url":9,"mix":380,"praise":80,"objection":104,"sub":21},2097429,-0.2,[24,21,25,26],"3033303053311131031033505330003101113005",[30,31,30,32],1793990870141]