Teaching least squares to a 5th grader by calibrating a robot

YouTubeRafael Irizarry480https://www.youtube.com/user/RafalabChannelTeaching least squares to a 5th grader by calibrating a robotvideo1.0270480https://www.youtube.com/360<iframe width="480" height="270" src="https://www.youtube.com/embed/videoseries?list=PLdl4u5ZRDMQQpUcSDRKN3V2vvx3_SmMbr" frameborder="0" allowfullscreen></iframe>https://i.ytimg.com/vi/3KFwJd5-JD8/hqdefault.jpg