The tasks were simple, calculate the scale, create a panoramic sketch, and describe the feelings they feel. They received clues for each task they completed, and at the end of the "track" they received a reward for a correctly guessed word. We had 3 hours reserved for field training. First, we explained to the students in the classroom what geocaching, gps is, and then there was an explanation for the calculation of the scale.
We had 3 hours reserved for field training.