https://www.theatlantic.com/education/archive/2014/03/5-year...
Math is not linear, So why do we teach math in hierarchical steps? - https://prezi.com/aww2hjfyil0u/math-is-not-linear/
http://ocw.mit.edu/resources/res-18-001-calculus-online-text... highly recommended for Calculus
https://www.theatlantic.com/education/archive/2014/03/5-year...
Math is not linear, So why do we teach math in hierarchical steps? - https://prezi.com/aww2hjfyil0u/math-is-not-linear/
http://ocw.mit.edu/resources/res-18-001-calculus-online-text... highly recommended for Calculus