An on - line resource center of units, lesson plans, teacher tools, video clips and discussion forums (teachingstudio.org)
Microphone: Located at the center of the unit, a built - in microphone allows your Nintendo DSi system to pick up spoken commands in specially designed games. (littletechgirl.com)
For this reason, the ScoopFree is more suitable for one regular sized cat that tends to use the center of the unit when doing its business. (catfooddispensersreviews.com)