Fun at the Tech Museum

There was an entire room filled with different stations each demonstrating a different concept such as pulleys, gears, air pressure etc.

Lukas learned the sweaty way how hard it is to generate any significant amount of energy - and he is grateful that his bedside lamp is not human powered.
All four kids spend a lot of time developing their own ball maze using common kitchen items on a slanted board.
When we finally left, we realized it was well past lunch hour, and not a complaint or whine in sight, everyone just had too much fun to think of something as pedestrian as food. However, it did not take long for either of our boys to devour a foot long Subway... no leftover for next day lunch as I had hoped...