CSC 216/s08/make plans

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Understanding Binary Trees

The problem

Binary Trees are a new concept and it is important to have a solid understanding of binary trees before moving onto binary search trees.

The problem is that we are given a row of letters and have no knowledge of how to order those letters. Likewise, we are given a row of numbers and asked to do the same thing.

There will be 2 groups of 3 at the front of the room. The activity is timed. You are pitted against a classmate and the object is to order the given list of letters and numbers in 3 ways: Preorder Traversal, Inorder Traversal, and Postorder Traversal.

The point of this exercise is not to be told what each of the 3 traversal types are. Mistakes and confusion are expected and this is important because the exercise to be discussed with the class and each person can see if their guess on how to do it worked.

Participants and props

How many students will participate? What else do you need (e.g., old tennis ball, Powerpoint slides, software).

The script

Describe how to do your exercise.