1. Have the students discuss their ideas. Describe the steps, or how would you go about predicting if there will be ground level ozone present in the next few days?

Implementation Tips:
This lesson uses archived images, which will offer greater flexibility to prepare for the lesson if you expect network failure, or cannot get into the computer lab.

• If there are not enough computers for students, you could:
• create small working groups
• project the images and weather data for the class using an LCD projector
• have a group of students try the activity by just using the newspaper weather report and forecast
• collaborate with Computer Teacher
• arrange to take your class or small group of students to the Internet lab to access computers on a regular basis for data collection

If the network is slow or not working, you could:

• print the images and weather data on overheads and use the overhead project to project the images for the clas
• print and/or photocopy the images and weather data, enough for small student working groups
• have the students do the activity by just using the newspaper weather report and forecast
• save data to disk

NOTES:

• Please refer to the Graphing Tips and Examples for assistance.

Graphing Cloud Cover/Conditions (Sunlight) - optional
This graph is optional and increases the complexity of the lesson. To graph Cloud Cover versus Time, use the chart below.  The chart lists various sky conditions (terminology may be subjective) with a numerical value associated with each condition to ease the students' ability to graph the data.

The Cloud Cover data, gathered from the Weather Underground site, specifically, the "Conditions" column, refers to the Cloud Cover visible in the sky.  Cloud Cover is often judged by the scale below and expressed in one of four terms, Clear, Scattered, Broken, and Overcast.  For graphing purposes, the terms need to be expressed with a numerical value.  In addition to explaining the conversion to your students, it may be necessary to point out that the amount of cloud cover has a direct relationship with the amount of sunlight, and the amount of sunlight has a relationship with the amount of ground level ozone generated during the day.