In this project we analyzed how learners deal with the situation in which learning stalls. This was achieved by looking at the pupils' use of imitation in a science experiment on "The Dissolution of Substances". When pupils' learning process stalled, they dealt with the situation by using imitation. Learners adopted the way of using imitation, according to their own context of experiment (i.e., "higher-level imitation", not "simple imitation"). As a result, it is suggested that learners achieved a higher-level of imitation through the process of trial and error by designing and carrying out...