Other
Brown Math: Remembering Trig Identities
Faced with a large number of trigonometric identities, students tend to try to memorize them all. This site the emphasis is on understanding how the functions work and on memorizing only about a half dozen of them - all the others work...
CK-12 Foundation
Ck 12: Algebra: Operations With Polynomials Study Guide
This comprehensive study guide highlights the main terms and formulas needed to understand operations with polynomials. Examples are included.
Council for Economic Education
Econ Ed Link: Hawaiian Economics: Barter for Fish & Poi
In ancient Hawaii, chiefs managed the economy by creating a land division system, the Ahupua'a, which divided the islands into pie slice shapes. Each Ahupua'a covered the three main regions of the islands: the mountains, the valleys, and...
PBS
Pbs Learning Media: Interactive Lessons Collection
Interactive lessons on a range of subjects and grade levels. Each presents content from a public media production, specially tailored to the curricular needs of the classroom. All of these lessons can be used to teach English Language...