| State machines are child's play: observing children ages 9 to 11 playing Escape Machine Recent countries visiting this post |  |
 | 4 | United States |
 | 1 | Germany |
 | 1 |
| State machines are child's play: observing children ages 9 to 11 playing Escape Machine Recent countries visiting this post | |
| 4 | United States |
| 1 | Germany |
| 1 |