Students use the pyramid method to solve percent problems. The pyramid grid provides a visual way to set up the equation.

In this learning activity you'll calculate percentages using a grid to solve problems.

This interactive activity represents the grid modeling technique, a heuristic model for choosing a centralized location for a manufacturing or distribution center within a supply chain network. The formula calculates a central point between the suppliers and the markets. This object requires the latest version of Flash Player.

In this learning activity you'll explore family structure then enter terms in a grid identifying if that family structure is determined by females, males, or both.