In this activity, students compare powers and decide whether to add or subtract values to a cumulative total so that the total stays as close to zero as possible.

This site explains how to evaluate exponents of positive and negative numbers. The site provides games and exercises to practice the skill.

In a format like TV's "Who Wants to Be a Millionaire," students answer math questions about radicals to earn points and help their group win the game. Teachers need to create their own question bank, which allows this game to be used for...