u3-t2-s1-d1
2 interactives — choose one
Three similar induction proofs (triangular numbers, sum of odds, powers of 2) sharing the same claim → base → assume → step → conclude skeleton.
Open fullscreen →Optional follow-on after a full proof — sort shuffled statements into base case, assumption, inductive step and conclusion.
Open fullscreen →Want a different take?
Already have one and want another angle on this point? Describe what students should notice. Requests are read and acted on.