This video on deconstruction in mathematics education shows how precalculus can be made easy by three stories about formulas: how formulas predict, how formulas are transformed into functions with two variables or equation with one variable – both to be handled by a graphical calculator, and how formulas can be used to real world modeling.

• Video: YouTube
• Manuscript: Deconstructing PreCalculus Manuscript
• Screens: Deconstructing PreCalculus Screens
• Paper: PreCalculus_ICME12_TSG18