Whole Number Thinking

Hidden Numbers

Introduction
This interview is based on the game "Hidden Numbers" and it reveals how Caitlin makes decisions about the size of decimal numbers on the length of the decimal part. She generally chooses longer decimals as larger, e.g. she thinks 0.2215 is larger than 0.68. However because Caitlin knows that 0015 is not larger than 68, she first checks that the initial decimal places are not zero.

This movie requires QuickTime 3 (or above) to run.
Download a copy if you don't have it already.
  A static version of this interview is also available.