Rating: (1-5)

Relevance to objectives:5-Each audio lecture is divided into small subtopics that teach all aspects of basic algebra and ratios.
Provides practice of relevant skills:5- After the small audio lecture there is unlimited related practice questions and quizzes.  You can unlock a puzzle by how many practice questions you do.
Likely to arouse/maintain interest:4- The interactive lab will maintain  interest the longest.
Likely to be comprehended clearly:5-The lectures are short and informative, with instant review. The practice questions have three levels of help.
Technical quality (durable, attractive):5-The point and click interface is excellent , along with all the audios. The graphics are easy to see and read.
Game: Winning dependent on player actions (rather than chance):5-The students can not reach the rewards without completing  numerous practice sessions.
Simulation: Validity of game model (realistic, accurate depiction):N/A Not modeled as games but more as a tutorial.
Evidence of effectiveness (e.g. field-test results):N/A (But it has a four star rating by Aces research,Inc.-link above)
Clear directions for play:5- The audios qive clear instructions.  The visuals also aid , they are modeled after relife learning media (such as a VCR).
Effectiveness of debriefing:5-The objectives are well covered.  The subtopics contain detailed instructions, and unlimited practices.