FransescornerTRIANGLE & 180 degreesAll people know that the sum angle in triangle is 180 degrees, unfortunately most of them didn’t know how to find it. In this post, I will…Sep 15, 2017Sep 15, 2017
FransescornerThe beauty of distributive properties in MathematicsYesterday, my student asked about how to calculate in one minute without calculatorSep 9, 2017Sep 9, 2017
