Supplies: 3x5 cards labeled with various letters of the alphabet (no letters repeat).
Directions: 2. Encourage students to develop a strategy for finding their answers. 3. Discuss the findings with the class. 4. When all possible fourletter combinations have been found, give each pair or group an additional card and ask them to find all possible fiveletter combinations.
5. Students could also be asked to make a tree diagram showing their findings. This activity leads to discussions of tree diagrams, the counting principle, and permutations.
As a followup activity, give each group of students a set of 4 cards where one of the letters repeats.
Distribute a
set of cards to each pair or group. As before, the task is to find all fourletter arrangements of the
cards. The arrangements do not have to spell actual words. Ask
students to record each "word". Ask students to make
observations about their answers.
