The screen display is well designed. Excellent graphics with some sound are used as enhancement. Student involvement is continuously active. Pacing and sequencing is controllable. Prompts, when given, are clear and easy to understand.
Feedback is positive and effective.
Upon brief review, the program appeared free of bugs and did not crash with inappropriate input. In the User's Guide, instructions were clear and easy to understand. Within the program, help screens ere sometimes available. Instructions were inconsistently given. At times, the lack of instruction seemed planned to encourage the user to use thinking skills and experimentation.