Cards of limits (with multiple dragging and colour-label)

Topic:
Limits
Here you are a set of cards showing different examples of limits. Read carefully the following questions: A) Organise into different groups some or all the cards according to your own criterion. How many ways (criteria) can you do it? B) Explore specific associations between two or more cards. You may focus on their similarities and differences. http://www.geogebratube.org/student/m55776 (More examples to discuss)