Great step by step tutorials that are easy to follow

My Take

This could be used in a variety of ways - by the teacher as an inro to percentages - by individual students as an intro or as a reinforcement OR even for advanced students as enrichment. I like that the tutorials are short and easy to understand and follow along. It made connections to prior knowledge. I did find some confusion with the practice problems - after the first two tutorials "Describing the meaning of percent" the firs question was X is what % of n. No examples of solving this had preceded this question. I did like the "hint" button and the fact that it only revealed one step at a time which provides scaffolding as needed by individual students. There seemed to be just the right number of practice problems given so as not to become excessive and frustrate or create boredom.