Explains equation building as two frogs count their hops to a rock, a log, and a pond.

A young girl uses data-collecting and problem-solving skills to determine where her family should go for a vacation.

The Elm Street Kids' Club decides to sell lemonade to earn money to fix up their clubhouse and they use a graph to keep track of their sales.

As they consider sorting their rock collection by color, size, type, and hardness, Josh and Amy learn that the same objects can be organized in many different ways.

Paul, his sister, and their three cousins try to figure out how many tickets it takes for rides at an amusement park in this introduction to simple algebra.

Uses a story of a three-way competition for votes to explain percentages to children.

A drive to recycle cans on Earth Day teaches the children of the Maple Street School Save-the-Planet Club about place value.