|Other Retailer||Price Checked Time||Their Price in NZD||Our Price|
|Amazon UK||1 days ago||54.78||$36.69||You save $18.09|
|Amazon US||5 days ago||42.55||$36.69||You save $5.86|
W. Michael Kelley is an award-winning former math teacher and author of seven math books. His method of making intimidating math topics very approachable, even humorous, has helped students and adults alike conquer their fear of numbers.