In this lesson, students use a 10 x 10 grid to solve various types of percent problems. The grid model offers a means of visualizing the given information as well as suggesting different approaches to solving problems.

In this lesson, students use a 10 x 10 grid to solve various types of percent problems. The grid model offers a means of visualizing the given information as well as suggesting different approaches to solving problems. Students begin with representing simple percents on the grid and then move to percents less than 1 and greater than 100. Solutions to the three standard kinds of percent problems are illustrated, as well as problems involving percent increase and percent decrease. A reproducible grid sheet is provided and several Internet extensions are included. This lesson plan was adapted from an article that appeared in the April 1994 issue of Mathematics Teaching in the Middle School. (author/sw)

This site can be used teachers in a variety of career fields. The 10 x 10 grid allows students to visualize, comprehend, and solve percent problems.

This site can be used teachers in a variety of career fields. The 10 x 10 grid allows students to visualize, comprehend, and solve percent problems. Of particular interest are the problems that illustrate a decimal part of a percent or percents greater than 100%. This site is especially useful when teaching career-technical students because percentages are applied in many career fields. Teachers can use this lesson to illustrate percentages of products produced, sold, or returned. Percentage of sales, taxes, or cost can also be shown to students. The lesson is best presented as an introduction to percent, but can also be used as a review. (author/dm)