Algebra 2 PreCalculus Introduction to Sequences Task Cards and Foldable. Discrete MathematicsActivity Based Learning with Task Cards and Foldables really work to help reinforce your lessons. Task cards, station cards, and foldables get your students engaged and keep them motivated. Included in the Lesson: 24 Task Cards For cards #1 - 16 your students will determine the first four terms of a sequence from a general term. Students must be able to simplify fractions and know the rules of expo