### Percent Increase and Decrease

Here's a sample lesson on Percent Increase and Decrease designed for a 52-minute Pre-Algebra class. 1. Start by watching the video on 'Percent Increase'. Make sure that students have the handout so that they don't have to write down the application problem. 2. Have students work on the two 'Group Work' problems on percent increase. 3. Follow the same process for 'Percent Decrease'. 4. Have the students do the Percent Increase and Decrease 'Matching Activity'. You need to have the tiles cut apart for them already. If there is not enough time to complete this in class (There usually isn't),…