Reuben wanjohi wangu is a graduate of university of Nairobi Kenya Bachelor of education (mathematics and business studies.Mathematics major) Trained automotive mechanic 2007-2008 and taught at Kimahuri youth polytechnic in 2009. Taught mathematics in many high schools including weithaga boys,murungai secondary,starsheikh group of schools Nairobi,st Francis girls Doldol. Trained and taught at the archdiocese of nyeri free online training program and in the program served as deputy principal. Has engaged in online training through YouTube channel where he has shared insight in mathematics with at least 20 copies of tutorials.