A detailed presentation illustrating the history of Africans migrating to the Americas from as early as 1500 through the late 1860's. Review the distribution of Africans in North and South America, the initial settlements, escaped and...

What caused the influx of African Americans and European immigrants into urban centers in the late 19th century? Learn about some of the discriminatory and anti-immigrant laws that were enacted to restrict their rights. Includes a chart...

Learn some facts about whooping cranes in this book. Includes audio narration in English and Spanish with text in English.

Learn about the monarch butterfly's life cycle, its dependence on milkweed, and its migration between Canada and Mexico. Includes audio narration in English and Spanish with text in English.

Look at the many different types of animal movement that you can see at the zoo. Book includes audio narration in 17 additional languages with text in English.

Essay investigating the migration and settlement of Eurasion tribal groups across the Atlantic ocean to North America.

From a chapter on America's expansion westward in a history textbook. This section looks at how Americans felt about westward expansion in the mid-1800s, and ways that the federal government promoted migration. Includes review questions.

Discusses conditions needed for the Hardy-Weinberg Law to hold true and demonstrates calculations involving allelic frequencies to illustrate this principle.

Learn the words to describe how different animals move. The book includes audio narration in English, Turkish, and Spanish with text in English.

Read about some of the animals that you might not expect to be swimmers. Includes audio narration in 7 additional languages with text in English.

The youngest daughter of George Donner tells the harrowing tale of her family's ill-fated journey at this site from the Library of Congress. This is primary source material.

Essay on the development of early indigenous tribes in the Americas. Author discusses how tribal culture developed in South America prior to Columbus.

A very simple, interactive, and informative explanation of things students can do to learn more about butterflies. Elementary appropriate.

Explore growth patterns in wildlife populations.

Explore different types of cycles in animal behavior.

Get independent practice identifying points, graphing points and equations on the coordinate plane. Each incorrect response gets a text box explanation and another try. Correct responses are confirmed.

Get independent practice writing algebraic expressions. Each incorrect response gets a text box explanation and another try. Correct responses are confirmed.

Get independent practice determining if the variable value given is a solution for the equation. Each incorrect response gets a text box explanation and another try. Correct responses are confirmed.

Get independent practice solving and graphing inequalities. Each incorrect response gets a text box explanation and another try. Correct responses are confirmed.

Get independent practice combining like terms. Each incorrect response gets a text box explanation and another try. Correct responses are confirmed.

Get independent practice to determine if the ordered pair solves the equation given. Each incorrect response gets a text box explanation and another try. Correct responses are confirmed.

Get independent practice adding integers. Each incorrect response gets a text box explanation and another try. Correct responses are confirmed.

Get independent practice subtracting integers. Each incorrect response gets a text box explanation and another try. Correct responses are confirmed.

Get independent practice multiplying and dividing integers. Each incorrect response gets a text box explanation and another try. Correct responses are confirmed.