I use this MS PowerPoint presentation in my 8th grade Pre-Algebra and 9th grade Math I classes as part of our initial review of various basic math topics. It can also be used in science classes as proper unit conversion is a must for science. It utilizes a detailed, step-by-step process to convert and solve various dimensional or unit analysis problems. The presentation includes the detailed solution of 4 example dimensional / unit analysis problems. It is a totally animated ppt file and is