[Free Registration/Login may be required to access all resource tools.] Learn how to use surveying and sampling to collect accurate data.

How do public opinion polls work? And, more importantly, are they accurate? Jason Robert Jaffe reveals the complexities and biases of polls and provides tips on how to think about polls as we make everyday decisions. [4:25]

Bridge, the Ocean Sciences Education Teacher Resource Center, is a growing collection of on-line marine education resources. It provides educators with accurate, useful, content-correct and content-current marine and data information on...