This 3 part video was commissioned by KQED as part of a series that introduces the concept of percentages. Part 1 covers the basics: what the concept means, how it is applied, and some examples. Part 2 covers discounts and sales: how percentages are applied to things like shoes and olive oil. Part 3 covers combining percentages: how discounts get added.
Part I: The Basics
Part II: The Math of Discounts (or, Finding A Good Deal)
Part III: Combining Percentages (or, Finding A Better Deal)