CK-12 Foundation
Ck 12: Life Science: 4.8 Hardy Weinberg
Understand the conditions required for the Hardy-Weinberg model in evolution.
Science Struck
Science Struck: Definition of Climax Community With Examples
Explains how a climatic community is the end product of ecological succession and describes the process by which this happens. Provides several examples of climax communities.
PBS
Pbs Learning Media: Early Tetrapod Fossils
In this transcript of an interview filmed for the PBS series "Evolution," scientists Ted Daeschler and Neil Shubin describe the discovery and significance of some of their key fossil finds.
Edutopia
Edutopia: Room to Learn: Mystery Science Theatre
Read and see examples of how one physics teacher turns his classroom into a student-centered, project-based and fun place to be.
University of Minnesota
University of Minnesota: Mechanics Problems: Force and Linear Kinematics Problem
This University of Minnesota site provides a series of contextually rich problems pertaining to force, Newton's second law of motion, and linear kinematics.
Curated OER
Graph of Supply and Demand Curves
This site shows both a supply and demand schedule, and constructs a graph using this schedule. It continues on to discuss equilibrium, and then shows a new equilibrium after there has been a change in supply.
Curated OER
Shifting a Curve
This site shows both a supply and demand schedule, and constructs a graph using this schedule. It continues on to discuss equilibrium, and then shows a new equilibrium after there has been a change in supply.
Curated OER
Etc: The Center of Population in the United States, 1790 1900
A map from 1904 of the eastern United States showing the westward progression of the centers of population from 1790 to 1900. "The centre of population is defined as 'the point at which equilibrium would be reached were the country taken...
Curated OER
Eternal Egypt: Maat
Maat is a goddess personifying truth, justice and moral integrity. Her statue was often offered by the kings to the major gods as a symbol of equilibrium and, thus, their authority to reign.
PBS
Pbs Teachers: Balancing Balls on Air
Investigate how the force of moving air from a blow dryer interacts with the force of gravity to keep a ping-pong ball perfectly balanced in midair.
NASA
Nasa: Beginner's Guide to Aerodynamics
This site from NASA uses a colorful graphic to illustrate why objects reach terminal velocity. Provides equation for the terminal velocity of an object. Graphic is accompanied by a simple explanation.
ClassFlow
Class Flow: Rates of Change
[Free Registration/Login Required] This is part 4 of a 4 part series to include the nature of chemical reactions, reaction types, and balancing chemical equations.
University of Virginia
Uva Physics: Using Vectors to Describe Motion
Background information on vectors and their use in describing motion in two dimensions. A comparison of Aristotle's and Galileo's perspectives on force and motion is given.
Other
Vapor Pressure & Msds
Describes the relationship between Material Safety Data Sheets and the substance's vapor pressure.
Physics4kids
Physics4 Kids: Thermodynamics and Heat: Second Law of Thermodynamics
Explains the second law of thermodynamics.
McGraw Hill
Mc Graw Hill Learning Center: Rigid Bodies and Rotational Motion
From the companion web site for the Contemporary College Physics web site. The collection of pages indexed from this page lead to a variety of useful resources pertinent to Chapter 9 (Rigid Bodies and Rotational Motion) of the book. Such...
Science and Mathematics Initiative for Learning Enhancement (SMILE)
Smile: The Center of Mass
This site from the Illinois Institute of Technology provides a lab activity in which students determine the location of the center of mass of an irregularly shaped object. Observations are related to the balancing point of the object....
Science and Mathematics Initiative for Learning Enhancement (SMILE)
Smile: Center of Gravity Lab
This Illinois Institute of Technologysite provides a lab activity in which learners find the center of gravity of a box which has nonuniform weight distribution. Complete with directions and discussion questions; answers provided.
Curated OER
Model of Monopolistic Competition
This site uses an example of "pushcarts on the beach" to demonstrate a monopolistically competitive market structure and how as more firms enter the market, price, quantity, and deadweight loss are all effected.
Khan Academy
Khan Academy: Interpreting the Aggregate Demand/aggregate Supply Model
In order for a macroeconomic model to be useful, it needs to show what determines total supply or total demand for the economy and how total demand and total supply interact at the macroeconomic level. This model is called the aggregate...
Khan Academy
Khan Academy: Law of Supply
If the price of something goes up, companies are willing (and able) to produce more of it.
Khan Academy
Khan Academy: Law of Demand
If the price of something goes up, people are going to buy less of it.
Khan Academy
Khan Academy: Aggregate Demand and Aggregate Supply Curves
This article explains how the concepts of supply and demand can be applied to the economy as a whole. Includes examples of an aggregate demand curve and an aggregate supply curve, and review questions at the end.
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