Weather, soil, and water quality are a few of the Earth science topics students explore in this e-book.

	Experiment	Suggested Products
1	Introduction to Data Collection	Go Direct® Temperature Probe
2	Soil Study	Go Direct® pH Sensor
3	Ocean Floor Mapping	Go Direct® Motion Detector
4	Water Hardness Study	Go Direct® Conductivity Probe
5	A Water Field Study	Go Direct® Conductivity Probe, Go Direct® pH Sensor, Go Direct® Temperature Probe
6	Heating of Land and Water	Go Direct® Temperature Probe
7	The Greenhouse Effect	Go Direct® Temperature Probe
8	Relative Humidity	Go Direct® Temperature Probe
9	Absorption of Radiant Energy	Go Direct® Temperature Probe
10	Reflectivity of Light	Go Direct® Light and Color Sensor
11	Schoolyard Study	Go Direct® Light and Color Sensor, Go Direct® Temperature Probe
12	What Causes the Seasons?	Go Direct® Temperature Probe
13	Solar Homes	Go Direct® Temperature Probe

• Instructions for data collection with Graphical Analysis 4
• Essential instructor information including teaching tips, suggested answers, and sample data and graphs
• Word-processing files of the student experiments, so you can edit the files to match your teaching preferences
• A generous site license—buy one e-book and duplicate the experiments for your class