|Other Retailer||Price Checked Time||Their Price in AUD||Our Price|
|Amazon UK||2 days ago||31.67||$16.63||You save $15.04|
David Glover has worked as a research scientist and as a teacher of mathematics and science. He has written best-selling maths and science books and CD-ROMs for all ages, from primary schoolchildren to Open University students. He loves challenging puzzles and problems!