This is a very interactice flipchart for grades K-2. It develops number sense and shows the 11 different ways to create sums of 10. It shows the pattern of how the first addend gets larger while he second addend gets smaller (visual chart). It also uses ten frames. This flichart contains: drag a copy, brainpop characters, ActivExpression questions for assessment, magic revealers, reward souds, and a hyperlink to a webpage. Students can continue to use their ActivExpressions on the webpage as the teacher uses the annoate over the desktop tool. Check out my other number sense flipcharts in my TPT store. Enjoy!