Khan Academy Static

Proof by induction is a core tool. This tutorial walks you through the general idea that if 1) something is true for a base case (say when n=1) and 2) if it is true for n, then it is also true for n+1, then it must be true for all n! Amazing!

2731_Proof_by_induction_example_3.html

2728_Proof_of_finite_arithmetic_series_formula_by_induction.html

2730_Proof_by_induction_example_2.html

2729_Proof_by_induction_example_1.html