Tarp, Allan2013-10-042013-10-042007http://hdl.handle.net/2003/31072http://dx.doi.org/10.17877/DE290R-6822Mathematics itself avoids blunders by being well defined and well proved. However, mathematics education fails its goal by making blunder after blunder at all levels from grade 1 to 12. This paper uses the techniques of natural learning and natural research to separate natural mathematics from killer-mathematics. Two digit numbers, addition, fractions, balancing equations, and calculus are examples of mathematics that has been turned upside down creating the metamatism that killed mathematics and turned natural Enlightenment mathematics into modern missionary set-salvation.en510Text