I wish I have been introduced to this resource just one week sooner. This would have been a great tool for my level 1 co-taught classes. Last week we were working on finding, completing, and writing rules for patterns. This would have been a great activity for the students to sit on their laptops and complete. After a short discussion about patterns I would have turned them loose on this site. Since there is no way of keeping track of how many they did or how they are doing. I would have provided a sheet complete with blank tables and a space to write the rule for the pattern. All they would have to do is complete the tables on the computer, transfer it to the worksheet, and write the rules. I really like that the site provides instant feedback.