McGraw Hill
Glencoe Biology: Ecological Behaviors: Self Check Quiz
Take this quick quiz to check comprehension of several ecological survival behaviors of animals.
Other
The Stoa Consortium: The City Eleusinion
The City Eleusinion was one of the most important sanctuaries in the religious life of the ancient Athenians. As the urban "branch" of the sanctuary of Demeter and Kore at Eleusis, the City Eleusinion played a key role in the initial...
Other
Learning Theory: Reinforcement
This site has a nice discussion on the nature and use of reinforcement in learning theory. Describes the four major types of reinforcement and also the use of reinforcement schedules.
Khan Academy
Khan Academy: Aneuploidy & Chromosomal Rearrangements
Find out about aneuploidy and nondisjunction, as they relate to down syndrome and other related disorders. Also learn about chromosomal rearrangements.
Illustrative Mathematics
Illustrative Mathematics: G Gpe Slopes and Circles
The purpose of this task is to lead students through an algebraic approach to a well-known result from classical geometry, namely, that a point X is on the circle of diameter AB whenever angle AXB is a right angle. This consists of...
Other
Tenant Net: How the Other Half Lives
Find a hypertext reproduction of the full text (with illustrations) of the original 1890 edition of Jacob Riis's classic work on the living conditions of New York's poor immigrants, "How the Other Half Lives: Studies among the Tenements...
Richland Community College
Richland Community College: Introduction to Probability
This site from Richland Community College provides an overview of probability including a list of probability rules. Several examples using dice are included.