I have never been good at building things, or at solving spatial puzzles, for that matter. But Bridge Builder is an intriguing problem-solving game that your students will enjoy. The object is to use the provided triangles to create a bridge for the motorcycle. You can rotate the triangles and change their size, if you wish. This game, though internet based, reminds me of the Bubble Ball app for iDevices I have reviewed in the past. Bridge Builder is part of the website called Toy Theater, which offers many learning activities for younger students in several different subjects.