Curation is excellent, and the temporary exhibits are always interesting and relevant, ranging from Dinosaurs to Robotics and so on. The permanent exhibit, FUTURE WORLD, changes based on the time of year, for example, in December, it was Christmas-themed.
It's located at a very central location, next to Marina Bay Sands, very easy to get to via the MRT, and also has a very good café in the lobby with excellent coffee.
Visit the café, it's worth your while.
Mon-Su: 10:00-19:00