The situation of choice is one of the most difficult moments to the learner. Should I out a comma here? Is it a good idea to give as many examples as I can? Which of the formulae is the most suitable one? Instead of a mere guess, the learner masters the skills of developing a hypothesis.

By the end of working with Stage 2, the learner can do the following:

  • define parameters for the description of elements and find the essential ones
  • define values of parameters for distinguishing between the elements
  • build hypotheses for distinguishing between the elements that are based on the interaction between various values of the defined essential parameters
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