There are many different ways to carry out this activity. Here are some suggestions:
•Individually: Use the mats provided with this set to have students sort the cards. You may also ask them to record their answers on a sheet of notebook paper.
•Small groups or pairs: Create a laminated poster board with a t-chart (irrational and rational) and have students sort the cards on the board. You could also add Velcro to the board and the cards and make it an activity they can use on the wall.
•Whole class: Use stick on magnets and create the t-chart on your white board and have students come up one at a time to sort the numbers.