Divisibility Rules by 2, 3 & 6 VersaTiles® Activity—perfect for math centers, small groups, or independent number sense practice. This self-checking divisibility activity helps students master rules for sum of the digits divisibility by 3 & 9 while using the VersaTiles® system to get instant feedback. Students solve 12 scaffolded problems to decide whether numbers are divisible using specific rules, strengthening their number sense and fluency. Works great for review, intervention, test prep,