A five-question interactive challenges mathematicians to find a correct tip and total amount using percents five, 12, and 18. A tool with moveable pieces assists participants in locating answers. Types of questions include...

Pupils engage in a lesson introducing them to the concept of return on investment, or ROI. Return on investment is a basic principle that should be understood before investing money.

Students explore percent. In this percent lesson, students investigate how to represent percentages on a hundreds grid. Working independently, students solve mathematical problems involving percentages.