Buttons or navigational tools are absent or confusing Screens are difficult to navigate, but some buttons and navigational tools work. Users can navigate a few screens. Screens contain adequate navigational tools and buttons. Users can progress through screens in a logical path to find information. Screens contain all necessary navigational tools and buttons.
Users can progress intuitively through screens in a logical path to find information.
No video, audio, or 3-D enhancements are present or use of these tools is inappropriate. Limited video, audio, or 3-D enhancements are present. In most instances, use of these tools is appropriate Some Video, audio, or 3-D enhancements are used appropriately to entice users to learn and to enrich the experience. In some cases, clips are either too long or too short to be meaningful. Appropriate amounts of Video, audio, or 3-D enhancements are used effectively to entice users to learn and to enrich the experience.