we went to 科學館 by taxi, from Banyan Tree, about $4X.
Macau so small and taxi so cheap, as long as taxi is available, no need to think other public traffic la.
(except for hotel shuttle buses)
But when came back from 科學館 . We waited for a few minutes but no taxi.(please note: difficult to get one from there!) A bus came, so we took the bus and went to 新馬路 to change for shuttle bus back to hotel.
科學館 is a very very interesting place, my kids stayed there almost 4 hours still not enough!