With so many categories and blocks in Scratch try this handy dandy customizable Scratch Skills Checklist. All categories are listed on the left, color coded to match the colors in Scratch. Each category expands with the list of blocks underneath. There are columns to enter the date you introduced the category/block to students along with column for notes. You can customize this for your learning environment. Check out my website and blog for more free tech-ed ideas and resources. www.mrsgeeek