Using DeMoivre's Theorem, the powers and roots of complex numbers are simplified. Several examples are given, including interactive exercises.

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...

ORBIS is an incredibly complex, and fascinating, geospatial compilation of 751 Roman sites over an area close to 4 million square miles. The model attempts to shed insight into how the Roman Empire functioned as a whole, and how it was...

Mexican artist Frida Kahlo is known for her self-portraits. These powerful and unflinching self-images explore complex and difficult topics including her culturally mixed heritage, the harsh reality of her medical conditions, and the...

There are many Hindu deities, some with great and others with limited powers. Most Hindus focus their devotion primarily on one of these, whom they regard as supreme. The greatest deities have complex natures and are shown in art in a...

Use these interactive activities as a supplementary material to practice sum, difference, multiplication and division, power and roots of complex numbers.

In this instructional activity, you will learn about complex numbers and imaginary numbers. Included are solved examples and interactive questions for review.

This collection contains two lesson plans and an interactive game that will facilitate discussion and deepen understanding of the complex issues raised in the documentary film, A Fragile Trust: Plagiarism, Power, and Jayson Blair at The...

This collection contains two lesson plans and an interactive game that will facilitate discussion and deepen understanding of the complex issues raised in the documentary film, A Fragile Trust: Plagiarism, Power, and Jayson Blair at The...

In this lesson plan, students will investigate error. As shown in earlier activities from navigation lessons 1 through 3, without an understanding of how errors can affect your position, you cannot navigate well. Introducing accuracy and...

The Zande, whose homelands lie within three modern African states (Republic of the Sudan, Zaire, Central African Republic), constitute a large and complex amalgam of originally distinct ethnic groups, united by culture and, to a...

Young students are introduced to the complex systems of the Earth through numerous lessons on its natural resources, processes, weather, climate and landforms. Key earth science topics include rocks, soils and minerals, water and natural...

"Northeast China - the provinces of Heilungkiang, Kirin, and Liaoning - is the most important region of the country and a nationally significant and still-developing center of agricultural production. Most of the Northeast remained...