|Other Retailer||Price Checked Time||Their Price in AUD||Our Price|
|Amazon UK||3 days ago||44.92||$36.54||You save $8.38|
|Amazon US||today||41.85||$36.54||You save $5.31|
Allen Downey is a Professor of Computer Science at the Olin College of Engineering. He has taught computer science at Wellesley College, Colby College and U.C. Berkeley. He has a Ph.D. in Computer Science from U.C. Berkeley and Master's and Bachelor's degrees from MIT.