Have you ever tried to help a child with their third-grade math homework, only to find yourself stumped? You're not alone. Many adults are surprised to discover that some of the math concepts ...

Solomon Areaya, Ashebbir Sidelil, Students’ Difficulties and Misconceptions in Learning Concepts of Limit, Continuity and Derivative, The Ethiopian Journal of Education, Vol. 32, No. 2 (December 2012) ...