Proving √2 is Irrational: Minding the Gaps

Recently, a teacher in Bangladesh asked us how to answer students’ common questions about his version of the proof that the square root of 2 is an irrational number. Some are questions about apparent gaps in the proof itself, others about how one would decide what to do in writing the proof. We’ll then compare … Proving √2 is Irrational: Minding the Gaps Read More »