Trigonometric Functions
Wave Mathematics: Trigonometric Functions
Further Exploration
Rapid Tables, a trigonometric sine calculator
University of Vienna - gallery of mathematical Java applets.
Biography


Classics
Commentary on the Phenomena of Aratus and Eudoxus
Picture and information of the sole surviving work of Hipparchus.
News & Events
Scientists put a light wave on hold
MSNBC
News from around the world of science.
Research
Google - Research database allows searching of the scholarly literature.
Experiment!
Sine Function (with unit circle)
An interactive graph from Desmos.com
Standing Wave Maker Interactive
From The Physics Classroom. The Standing Wave Maker Interactive allows learners to investigate the formation of standing waves, the vibrational patterns associated with the various harmonics, and the difference between transverse and longitudinal standing waves.
Next Generation Science Standards (NGSS)
Next Generation Science Standards: For States, By States
National Academies Press: A Framework for K-12 Science Education