Review Excerpt: Designed to “teach complex multiplication strategies” to children in 3rd-5th grades, the maze-like reward system asks you rebuild bridges that have been blown away in a storm on Mt. Multiplis. The more math problems you complete, the more gems you earn and the more bridges you build. The app was funded by the Federal Department of Education, with funding provided by the Institute of Education Sciences’ SBIR program. Subscribers, please log into our database using your password to read the full review along with our rating, and see why this received our Editor’s Choice Award.