Red Dragonfly Mathematics Challenge Booklet is an English adaption of a classic Japanese mathematics problem solving book called Math Brain Quiz (Red) by Mr Yasuhiro Hosomizu. It was written by the State of NSW Department of Education and Training in 2010. The main focus of Red Dragonfly is to provide students with higher-level mathematical problems, rather than routine procedural tasks. In addition, it increases opportunities for students to discuss alternative solutions and explain their thinking.
Please note, the iPad app is not interactive, it purely presents the problems as they would appear on paper. However, it is available to download for free from the App Store which saves you $30.00 if you were to purchase a hard copy of the text.