{"action":"created","issue":{"url":"https://api.github.com/repos/udacity/sdc-issue-reports/issues/171","repository_url":"https://api.github.com/repos/udacity/sdc-issue-reports","labels_url":"https://api.github.com/repos/udacity/sdc-issue-reports/issues/171/labels{/name}","comments_url":"https://api.github.com/repos/udacity/sdc-issue-reports/issues/171/comments","events_url":"https://api.github.com/repos/udacity/sdc-issue-reports/issues/171/events","html_url":"https://github.com/udacity/sdc-issue-reports/issues/171","id":191777685,"number":171,"title":"quiz tensorflow linear function - A critique","user":{"login":"giladgressel","id":6275366,"avatar_url":"https://avatars.githubusercontent.com/u/6275366?v=3","gravatar_id":"","url":"https://api.github.com/users/giladgressel","html_url":"https://github.com/giladgressel","followers_url":"https://api.github.com/users/giladgressel/followers","following_url":"https://api.github.com/users/giladgressel/following{/other_user}","gists_url":"https://api.github.com/users/giladgressel/gists{/gist_id}","starred_url":"https://api.github.com/users/giladgressel/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/giladgressel/subscriptions","organizations_url":"https://api.github.com/users/giladgressel/orgs","repos_url":"https://api.github.com/users/giladgressel/repos","events_url":"https://api.github.com/users/giladgressel/events{/privacy}","received_events_url":"https://api.github.com/users/giladgressel/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":{"login":"Brok-Bucholtz","id":4749091,"avatar_url":"https://avatars.githubusercontent.com/u/4749091?v=3","gravatar_id":"","url":"https://api.github.com/users/Brok-Bucholtz","html_url":"https://github.com/Brok-Bucholtz","followers_url":"https://api.github.com/users/Brok-Bucholtz/followers","following_url":"https://api.github.com/users/Brok-Bucholtz/following{/other_user}","gists_url":"https://api.github.com/users/Brok-Bucholtz/gists{/gist_id}","starred_url":"https://api.github.com/users/Brok-Bucholtz/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Brok-Bucholtz/subscriptions","organizations_url":"https://api.github.com/users/Brok-Bucholtz/orgs","repos_url":"https://api.github.com/users/Brok-Bucholtz/repos","events_url":"https://api.github.com/users/Brok-Bucholtz/events{/privacy}","received_events_url":"https://api.github.com/users/Brok-Bucholtz/received_events","type":"User","site_admin":false},"assignees":[{"login":"Brok-Bucholtz","id":4749091,"avatar_url":"https://avatars.githubusercontent.com/u/4749091?v=3","gravatar_id":"","url":"https://api.github.com/users/Brok-Bucholtz","html_url":"https://github.com/Brok-Bucholtz","followers_url":"https://api.github.com/users/Brok-Bucholtz/followers","following_url":"https://api.github.com/users/Brok-Bucholtz/following{/other_user}","gists_url":"https://api.github.com/users/Brok-Bucholtz/gists{/gist_id}","starred_url":"https://api.github.com/users/Brok-Bucholtz/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Brok-Bucholtz/subscriptions","organizations_url":"https://api.github.com/users/Brok-Bucholtz/orgs","repos_url":"https://api.github.com/users/Brok-Bucholtz/repos","events_url":"https://api.github.com/users/Brok-Bucholtz/events{/privacy}","received_events_url":"https://api.github.com/users/Brok-Bucholtz/received_events","type":"User","site_admin":false}],"milestone":null,"comments":4,"created_at":"2016-11-26T00:22:26Z","updated_at":"2016-12-08T19:07:56Z","closed_at":null,"body":"instructions have errors.  Gonna add to this issue with pics etc.  so if it looks empty, it's cause i just started it as a place to jot down what I see as I do this quiz\r\n<img width=\"880\" alt=\"screen shot 2016-11-25 at 4 24 58 pm\" src=\"https://cloud.githubusercontent.com/assets/6275366/20636923/ba2eeac4-b32b-11e6-98b7-c6b3ad6faf9e.png\">\r\nSo this picture doesn't make much sense to me.  What does it mean to add the X's and Y's together? and why doesn't it work?  Drawing the lines visually doesn't teach the student anything, you need to spell out what the computation would be.\r\n\r\nSaying \"turns out this doesn't work\" doesn't mean anything.  It doesn't cause any thinking.  It just says \"don't do this\", so why then did you even show it to me??\r\n\r\n<img width=\"843\" alt=\"screen shot 2016-11-25 at 4 26 54 pm\" src=\"https://cloud.githubusercontent.com/assets/6275366/20636930/fa7e7a9a-b32b-11e6-8322-fd468623bf81.png\">\r\nThis picture has some error. Your matrix doesn't line up with your weights. In the graph you have W12, in the matrix you have W21.\r\n\r\nI think in an MxN matrix, we'd have [[(1,1),(1,2),(1,3)][(2,1),(2,2),(2,3)]]\r\n\r\nYour notation doesn't make any sense to me.  In the bottom row you have (2,1),(2,2)(3,2)  the bottom left is (2,1) so it's 2nd row, 1st column.  The bottom right is (3,2) so it's 3rd column , 2nd row.\r\nbe consistent.  This is wrong.\r\n\r\n<img width=\"857\" alt=\"screen shot 2016-11-25 at 4 32 42 pm\" src=\"https://cloud.githubusercontent.com/assets/6275366/20636963/cdc31294-b32c-11e6-84b2-9f1128af7bbc.png\">\r\n\r\nWhat?  What line?  What are you talking about?  I think an example with points in a graph showing the line wx+b wouldn't hurt.  I know that sounds obvious, but trust me, I doubt it is for a lot of students.\r\nStudents will not easily make the connection between graph form (cicles and lines) and actual equations which is what they associate with \"lines\"\r\n\r\n<img width=\"877\" alt=\"screen shot 2016-11-25 at 4 36 13 pm\" src=\"https://cloud.githubusercontent.com/assets/6275366/20636977/4f3bdc16-b32d-11e6-8269-772241ff61b2.png\">\r\n\r\nI think you need to teach _why_ a lot more in these quizes.  WHY are we switching forms?  Otherwise whats the point of telling me?  Just saying \"we do this\" doesn't teach anything, it still requires students to go outside and learn the _reasons_ for things. \r\n\r\n\r\n<img width=\"799\" alt=\"screen shot 2016-11-25 at 4 46 22 pm\" src=\"https://cloud.githubusercontent.com/assets/6275366/20637034/c16f8fde-b32e-11e6-8730-55e43c8ca6a5.png\">\r\n\r\nAgain, _why_ is the bias simpler?  Why do you use random weights but don't need to randomize the bias?  Teach don't tell!\r\n\r\n"},"comment":{"url":"https://api.github.com/repos/udacity/sdc-issue-reports/issues/comments/265826051","html_url":"https://github.com/udacity/sdc-issue-reports/issues/171#issuecomment-265826051","issue_url":"https://api.github.com/repos/udacity/sdc-issue-reports/issues/171","id":265826051,"user":{"login":"dhruvp","id":2255690,"avatar_url":"https://avatars.githubusercontent.com/u/2255690?v=3","gravatar_id":"","url":"https://api.github.com/users/dhruvp","html_url":"https://github.com/dhruvp","followers_url":"https://api.github.com/users/dhruvp/followers","following_url":"https://api.github.com/users/dhruvp/following{/other_user}","gists_url":"https://api.github.com/users/dhruvp/gists{/gist_id}","starred_url":"https://api.github.com/users/dhruvp/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/dhruvp/subscriptions","organizations_url":"https://api.github.com/users/dhruvp/orgs","repos_url":"https://api.github.com/users/dhruvp/repos","events_url":"https://api.github.com/users/dhruvp/events{/privacy}","received_events_url":"https://api.github.com/users/dhruvp/received_events","type":"User","site_admin":false},"created_at":"2016-12-08T19:07:56Z","updated_at":"2016-12-08T19:07:56Z","body":"@Brok-Bucholtz is this closed?"}}
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