These flash cards are high frequency cards that go with my 100 High Frequency Word Assessment, Progress Monitoring, and ideas for research based interventions for Response to Intervention. They are formatted to fit Clean Edge Business Cards, but can be printed out on card stock. They are numbered into groups of 25 for RTI progress monitoring, based on when they occur in reading. Words found in lower level reading books are in the first 25, and those words found at higher levels of text are in the last 25. The 50 in the middle are typically seen in mid 1st - 2nd grade level words. I have numbered them for ease in pulling the ones that you need.