Discovering combinations of the keys for a simplex lock is an unique way to study combinatorics. Use the problem of a simplex lock, along with Texas Instruments handheld devices and math manipulatives such as Cuisenaire rods, to introduce basic counting principles and techniques. Students will be able to conceptualize the meaning of combinations and permutations.

Presentation Format: 9-12 Session
Grade Band Audience: Higher Education, 9 to 12