How does the number of sides of a polygon affect the angle measures? Learners recognize a pattern in finding the total measure of interior and exterior angles and the number of diagonals. They use the patterns to calculate...

This resource provides an explanation of NASA's GALEX mission and how the space-based telescope can view distant galaxies as they were billions of years ago. The resource also discusses the other aspects of galaxies that GALEX...

Why did Chinua Achebe write "An Image of Africa: Racism in Conrad's Heart of Darkness" in response to Conrad's novel? As part of a study of Things Fall Apart, class members conduct a socratic seminar focused on Achebe's purpose and...

As part of their study of Things Fall Apart, class members conduct a close reading of a section of Chinua Achebe's essay, "An Image of Africa: Racism in Conrad's Heart of Darkness." Jigsaw groups then compare the voice in the essay...

Explore the concept of density within states of matter—gases, liquids, and solids—through a group experiment in which young scientists test objects' texture, color, weight, size, and ability to sink or float.    

This is a very extensive list of rhymes that "Occur frequently in discussions of poetry and critical writing, but not with absolute consistency." All have definitions, and many have examples. They are organized into five categories:...

This site from Palomar College provides an explanation of the different types of family residence patterns found in the world. Uses cultural examples and diagrams.

Calling itself "unique," Bob's is easy to use, with cross-links throughout, phonetic pronunciation guides when necessary, and many examples and quotations. Click on the letter and scroll for the word.