Liza's teacher has given her class a math problem to solve. she says that there is a trick to it but if they really think about it, the answer is quite simple. the class is silent for a few moments before liza suddenly raises her hand and provides the correct solution to the problem. in this scenario, liza's sudden understanding of the problem exemplifies

Liza's sudden understanding of the problem exemplifies "insight learning".

Insight learning means the process of finding solution for a problem in a totally cognitive way with no outside stimulus involved, or with no attempt made or observation about the problem. Like in the given example Liza found he solution. German psychologist Wolfgang Kohler developed the theory in 1920s while experimenting with the apse.