CK-12 Foundation
Ck 12: Principles of Biology
[Free Registration/Login may be required to access all resource tools.] Explains the four principles that unify biology - cell theory, gene theory, homeostasis, and evolution.
CK-12 Foundation
Ck 12: Biology: Principles of Biology
[Free Registration/Login may be required to access all resource tools.] Covers the four unifying principles of biology.
ClassFlow
Class Flow: Number Theory
[Free Registration/Login Required] This flipchart will help students understand the four basic arithmetic operations. There are activities to give them practice using them to solve problems. Assessment questions are included.
Quia
Quia: Color Theory
Four activities quizzing vocabulary terms about the usage of color in art. Matching, concentration, flashcards, and a word search are available. Teachers can use these to supplement their lessons, or to help students review for a test.
Stanford University
Stanford Encyclopedia of Philosophy: Aristotle
Looks at the life of Aristotle (384-322 B.C.E.) and the far-reaching scope of his intellectual ideas. The article examines in depth his theories in the disciplines of philosophy, politics, mathematics and science, and his legacy.
Other
Valdosta State: The Behavioral System
Excellent review of behavioral psychology. Presents the four types of behavioral theories in outline form. Has links to more details.
PBS
Wnet: Thirteen: Concept to Classroom: Inquiry Based Learning
One of eleven workshops presented by Concept to Classroom, this workshop on Inquiry-based Learning takes you through four major steps (explanation, demonstration, exploration, and implementation) to learn about it, then put it into...
Science Buddies
Science Buddies: Testing Behavioral Incentives
Research has shown that positive reinforcement is an effective means of influencing behavior. This experiment looks further to determine which type of reinforcement-praise or reward-is more effective with young children. The objective of...
Other
Internet Society: A Brief History of the Internet
A brief history of the internet, written by those who were involved in the development evolution of the Internet. This history revolves around four distinct aspects: the technological evolution, operations and management aspect of a...
Other
Plato & His Dialogues: Plato's Tetralogies
View Plato's dialogues organized into a system of seven tetralogies - meaning that each is composed of four dialogues or discourses. Includes links for further information on each. Great starting place for learning more about Plato and...
Other
Albrecht Durer: Four Horsemen of the Apocalypse
This page from the Apocalyptic Ideas in Old English Literature contains a picture of Durer's "Four Horsemen of the Apocalypse".
Texas Instruments
Texas Instruments: Numb3 Rs: Driving With Djikstra
Based off of the hit television show NUMB3RS, this lesson introduces students to one of the prominent algorithms in graph theory used to find shortest paths -- the Djikstra Algorithm. The lesson includes four graphs of increasing...
CK-12 Foundation
Ck 12: Common Parts of the Cell 1
[Free Registration/Login may be required to access all resource tools.] Online activity summarizes the cell theory, describes four parts all cells have in common, and the importance of the work of Robert Hooke and Anton van Leeuwenhoek.
Famous Scientists
Famous Scientists: Empedocles
Meet Empedocles, the Greek philosopher who is best known for being the originator of the cosmogenic theory of the four Classical elements.
University of Washington
Evolutionary World Politics: Evolutionary Paradigm for Global Politics
Paper outlining an evolutionary theory of global politics. The theory is based on four propositions but the paper focuses on the propositions stating that the institutions of world politics evolve and that the rise and decline of world...
Virginia Commonwealth University
Vcu: J. Mahoney: Socialization
Understand the researched agents of, four types of, and multiple key features contributing to the scientific theories of establishing socialization for individuals and cultures through this comprehensive document.
Other
Univ. Of Delaware Physics: More Semiconductor Physics
The University of Delaware Physics Department provides this site from a site titled "Silicon, Circuits, and the Digital Revolution," here is a series of four pages which explain the details behind how semiconductors work. An introduction...
WebMD
Web Md: Children's Health: Piaget Stages of Development
Understand the four stages of cognitive development researched by the psychologist, Jean Piaget. Piaget studied the intellectual development in children.
Khan Academy
Khan Academy: Money Growth and Inflation
Practice what you know about the equation of exchange, the quantity theory of money, and the relationship between the money supply and inflation in this four-question exercise.
Other
University of Rochester: Intro. To the Scientific Method
Here you can find a detailed overview of the scientific method. Content addresses what the scientific method is, its four steps, some common mistakes when applying the scientific method, and more.
American Museum of Natural History
American Museum of Natural History: O Logy: Stuff to Do: Light Quest
Light Quest activity, for two to four players, designed to explain how atoms create light and where photons come from.
Victorian Web
The Victorian Web: The Sublime
This site provides an excellent variety of essays divides the topic of the sublime into four categories: objective sublime, subjective sublime, characteristic literary motifs, and cultural relations.
Buddha Dharma Education Association
Buddha Net: Dependent Arising
This Buddhanet essay on Buddhist doctrine of dependent origination presents the theory of the cause of rebirth and suffering.
A&E Television
History.com: What Happened to Twa Flight 800?
Minutes after its take off from New York's Kennedy International Airport, a Boeing 747 headed for Paris exploded midair over the Atlantic Ocean off the coast of Long Island on July 17, 1996, leaving all 230 people aboard dead. The...