Update: I added Assignment #2B and Assignment #2C which focuses on writing equations in standard form. These assignments are coded and available at socrative. I used them today and it worked well. Included in this zip file are 7 Power Point files. 2 files are introductory lessons for whole class instruction and 5 files are assignments. A brief description of each: Intro #1 is a 20 slide intro to percent mixture problems. 2 problems are analyzed and broken into 3 true 2 variable linear equation