Different types of realistic construction vehicle and road-building machinery are toys in a sandpit. Touching the vehicles will make them move, or extend the arm of the crane or operate the dumper. (apps, constructive play)
(Requires iOS 4.3 or later. Compatible with iPhone, iPad, and iPod touch. This app is optimized for iPhone 5.)Cars
(Apple Store: $3)
More info: http://thematica.info/
This app is available by borrowing an iPad from the library.
(Please search by the app's name and choose an iPad that has the app included)