Introductory Logic Lesson 24 challenges you to find the 24 valid forms of mood and figure (out of 256) by writing counterexamples. In these two videos, I show you how it can be done.
My question has to do with Lesson 24. Exercise 22 has the students do a challenge, testing the validity of all 256 forms. I understand it’s to practice counterexample. Is there another reason not to put this challenge after lesson 26 after they’ve learned all the rules? (Which I think would make it easier.) Continue reading Counterexample challenge