Working on a new calculus textbook can be a daunting project, and it is something that HÃ¥kan Lennerstad knows a bit about. He happens to be a faculty member at the Blekinge Institute of Technology in Sweden, and he recently created this paper (along with two of his students, Maria Salomonsson and David Erman) that describes how he was able to develop new ways of learning calculus while working...