From YouTube, produced by YourTeacher.com
Students learn to solve "age" word problems, such as the following. Bret is 3 times as old as Laura. In 5 years, Bret will be twice as old as Laura. Find their ages now. Note that this problem requires a chart to organize the information. The rows of the chart can be labeled as Laura and Bret, and the columns of the chart can be labeled as "age now" and "age in 5 years". The chart is then used to set up the equation. Instructor uses white board. Suitable for older middle school and high school students.