As my primary response to #update7, I preferred to talk about Revision Assistant. However, I elaborated on it in my #update 4. Furthermore, as the first part of week four was allocated to the learners with disability, I would rather post a relevant update. Therefore, I chose NumberShire. http://www.youtube.com/watch?v=zWpUXUAxlfQ

NumberShire is a game-based mathematics K-12 intervention for students with/or at the risk of disabilities. The game integrates instructional supports such as providing explicit, systematic, and frequent instruction, and also it allows students an adaptive work in which they could process on their own pace. It provides the formative assessment-based feedback through monitoring their performance.
 

Evidence shows that students with poor performance in early primary grades would most probably keep facing difficulties through the rest of their primary education. The project team developed an integrated mathematics learning and assessment gaming system so that learners with/or with the risk of disability could learn mathematics. The results of scholar’s investigation in phase I showed it functioned as intended, and that students were engaged when playing game and learning mathematics.