You can learn to graph as well as a calculator using calculus. The lesson introduces using derivatives to find critical points needed to graph polynomials. Pupils learn to find local maximums and minimums and intervals of increase...

Direct and to the point (the slope at a point that is) describes this one-page proof of the derivative of the sin(x). The definition of a derivative using a limit is the first step in this sequential, algebraic, explanation of how...

Need a hand with an Algebra II integer exponent lesson? This versatile worksheet can be utilized as a lesson to supplement instruction. It derives the idea of a negative exponent before practicing a variety of questions.    

Sometimes the best way to understand a concept is to break it down. Young vocabulary pupils work with word parts in a hands-on activity that prompts them to connect flash cards with affixes to their root and base words....

Word problems can make even expert mathematicians go blank. Practice solving word problems with an extended version of the GUESS method (givens, unknowns, equations, solve, substitute), which adds the steps of drawing a diagram, making...

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...

The term "tropical-forest foragers," or "pygmies," refers to ethno-linguistically diverse peoples distributed across the forested regions of Central Africa who are particularly short in stature and who traditionally have lived by...

The ethnic identity of this Iranian minority group is derived from their religion, Zoroastrianism. They constitute only 0.18 percent of the Iranian population. The term "Zoroastrian" is taken from the name of their prophet Zarathushtra...

The Muslim Somalis of the Horn of Africa speak the Somali language and live in the Somali Democratic Republic (Somalia). There are also substantial numbers of Somalis in neighboring countries: the southern half of Djibouti, the eastern...

The Herero are a Bantu group living today in Namibia and in the Republic of Botswana in southern Africa. The Herero speak a form of southwestern Bantu that is shared most closely by two other major groups. Cattle herding remains the...

Amhara culture is often identified with Abyssinian culture, which is regarded as the heir to the cultural blending of ancient Semitic and Cushitic (African) patterns. "Ethiopia" is derived from an ancient Greek term meaning "people with...