How to take Science notes from ScienceNotes.org.
Accuracy and Precision video from Allen High School Chemistry; also Dimensional Analysis and Units.
The Open Door Web Site has links to information on Science Skills such as Scientific Investigations, Drawing in Biology, Drawing Tables, Error Analysis, how to Understand Graphs, Statistics and more.
A lesson on Independent, Dependent and Control Variables from Ms Cooper:
How to spot a misleading graph, a 4m video from TED-Ed.