Instruct: Classify the given Amazon review as either positive or negative.
Query: A Window for Sure in Eucilid's Windos

I enjoy this book for several reasons: it gives me the opportunity to discuss concepts having to do with space and numbers with kids which I did not have before; the approach and storylines to these universal discoveries is novel and engaging; and last by not least, it is wondeful to discover another side to the intelligence and playfulness of the author; I have primarily known him as a media executive.