Go to the city of Troodon, there you are in the game Math Adventures in Troodon Town Buddy's gem hunt already waiting for the baby tyrannosaurus named Buddy. He is going to descend into a deep mine, where precious crystals are extracted and collect a collection of different stones. But there is one problem - a hero without your help can not sort the pebbles. On the right will be a sample of a steel color, along which you must select the crystals from those that will appear as the hero descends to the bottom of the cave. After landing, you need to put collected gems in special compartments on the right panel.