Mrs. Frizzle and the Magic School Bus webquest

1. The Magic School Bus Gets Cleaned Up
2. Air Pollution is something to get choked up about!
3. A Sick Bus Coughs Out Exhaust
4. A Different Fuel? by Phoebe
5. Mrs. Frizzle's Class Gets Dirty
6. Clean As A Whistle by Phoebe
7. Get Money for Your School

Air Pollution is something to get choked up about!

What is the AQI? What does it measure? Who needs to know about AQI?