University of St. Andrews (UK)
University of St. Andrews: Johann Muller Regiomontanus
His work in geometry and trigonometry gave definition to many common terms that we know today.
Instituto Latinoamericano de la Comunicacion Educativa
Red Escolar: Barcos en Alta Mar
In Spanish. Play submarine by using trigonometry, learn the law of sines and cosine, build an instrument to measure angles and distance and find out who was the father of Trigonometry.