Video program explains the difference between observation and experiment and the principles of experiment design. Lesson draws on real-life example of osteoarthritis study and a randomized comparative experiment. [28:39]

Meteorologists use histograms to map when lightning strikes and this visualization technique helps them understand the data in new ways. [9:42]

Twin studies track how similar identical and fraternal twins are on various characteristics, even if they don't grow up together. Correlation lets researchers put a number on it. Scroll down the page to find comprehensive student and teacher guides to accompany the video. [10:50]

Video presentation on the probability of independent events, covering related topics: multiplication rule, random variable, and mean and standard deviation. [28:41]

This unit revolves around various social realist authors during the Gilded Age in America. Click the tabs for the list of authors, timeline, video and activities.

Charlotte Perkins Gilman's writing career is featured in this brief biography. Click "Charlotte Perkins Gilman Activities" for related resources.

Nathaniel Hawthorne is featured in this brief biography highlighting his Puritan family background which inspired his thought provoking writings of the nineteenth century. Click on "Nathaniel Hawthorne Activities" for related resources.

A proponent of social and environmental rights, Henry David Thoreau is featured in this brief biography highlighting his contributions to literature. See Teaching Tips and Author Questions for discussion ideas.

This unit delves into American modernist literature which introduced itself between World War I and World War II, including authors Ernest Hemingway, Gertrude Stein and F. Scott Fitzgerald. Explore the site for a video on demand, activities, etc.

This brief biography of F. Scott Fitzgerald draws on his ability to realistically portray life during the "Jazz Age," a phrase coined by Fitzgerald. "F. Scott Fitzgerald Activities" offers related materials.

This unit features the rich oral tradition of Native Americans storytelling in various genres predating the introduction and influence of English writings, bringing three contemporary authors to light. RI.11-12.8 seminal U.S. texts, RI.11-12.9 17,18.19th Cen Historic

This unit explores the documented perceptions of Native Americans, religious faiths, physical challenges of new lands and how the combination of immigrants and Native Americans shaped the New World. Click on "Activities" for related materials.

This unit features authors of Antebellum America and how they portray the American identity through their literature. Click on the tabs to explore the various resources available to enhance this unit.

This resource focuses on realist author Charles W. Chesnutt and his manner of portraying African American characters in the South during the late nineteenth century. See "Charles W. Chesnutt Activities" for related resources.

This biography features Mark Twain as a regional realist author, world renown for his ability to portray real Americans in the late nineteenth century. Click "Mark Twain Activities" for artifacts and activities.

Nobel Prize winner, T. S. Eliot is presented in this brief biography highlighting his life and literary contributions to modernist poetry. See "T. S. Eliot Activities" for related artifacts and activities.

Thomas Wolfe is presented in this brief biography, highlighting his writings which exemplified the American culture of the 1920's-1930's. Click on "Thomas Wolfe Activities" for related resources.

Zora Neale Hurston is featured in this biography highlighting her literary contributions which focused on African Americans as whole people, celebrating their heritage, in an era when black authors tended to write about their suppression. See "Zora Neale Hurston Activities" for more resources. Links are provided for a PDF instructor guide for the unit and to artifacts, teaching tips, and discussion questions for this author.

This is a brief biography of seventeenth century minister and missionary Jonathan Edwards who documented his sermons. Click on "Jonathan Edwards Activities" for more resources.

English immigrant in the New World, Anne Bradstreet became an acclaimed poet of Puritan New England. Click on "Anne Bradstreet Activities" for related artifacts and activities.