A more detailed account of calculus without limits for those with a background in formal maths is here in this series of six presentations at the maths department of the Universiti Sains Malaysia in early Feb.
Got a little time off only on my last day in Penang, when I visited the charming snake temple. Saw a huge python, the monocular cobra, king cobra, and pit vipers, all on the loose.
Then, of course, there was the charming funicular train (sadly closed now), and the spectacular view from Penang hill.