Music Theory
Music theory.net: The Major Scale
A terrific reference for music students and teachers! Explains the fundamentals of the major scale, provides diagrams, and audio clips to help children recognize this piece of music theory.
CK-12 Foundation
Ck 12: Measurement: Scale Distances or Dimensions
[Free Registration/Login may be required to access all resource tools.] Recognize unit scale as a ratio between units of measure of scale dimension to actual dimension.
Concord Consortium
Concord Consortium: Stem Resources: States of Matter
Using simulations observe what solids, liquids, and gases look like at the atomic scale. After observing the different states of matter at their atomic level, students will be able to conclude about the forces and attractions that exist...
BBC
Bbc Bitesize: Gcse Edexcel: Probability
Find out how probabilities are written as fractions, decimals or percentages on a scale from 0 to 1. Knowing basic facts about equally likely outcomes can help to solve more complicated problems.
ClassFlow
Class Flow: Musical Notation
[Free Registration/Login Required] This flipchart is an introduction to the music staff and notation. It describes the notes on both the treble and bass clefs. Sound files for each pitch of a C scale and some Activote questions are...
CK-12 Foundation
Ck 12: Elem Math: Visually Find the Weight in Compound Units for Multiple Items
[Free Registration/Login may be required to access all resource tools.] A video and practice questions on how to read the scales for two items and record the weights in compound metric units. [1:22]
CK-12 Foundation
Ck 12: Elem Math: Visually Finding Weight in Compound Units
[Free Registration/Login may be required to access all resource tools.] A video and practice questions on how to read a scale and record the weight in compound metric units. [1:08]
Curated OER
Wikipedia: National Historic Landmarks in Washington, d.c.: General Post Office
This post office is a fine example of restrained Neoclassical design. Built in phases between 1839 and 1866, the building features beautiful scaling and fine details.
BBC
Bbc: Gcse Bitesize: Types of Chemical Reactions
Bases are substances that can react with acids and neutralize them. Alkalis are bases that are soluble in water. The pH scale measures how acidic or alkaline a substance is. Substances with a pH lower than 7 are acidic, those with a pH...
Khan Academy
Khan Academy: An Introduction to Ancient China
We will refer to Ancient China as the time between the Neolithic period (ca. 6,000-ca. 1750 B.C.E.) and the Han dynasty (206 B.C.E.-220 C.E.), This is the formative stage of Chinese civilization. During this time, what we now call China...
Other
Rensselaer Polytechnic Institute: Chemical Equilibrium
This site from the Rensselaer Polytechnic Institute provides an introduction to chemical equilibrium, covering equilibrium expressions, the pH scale, and presenting how to plot log concentration diagrams.
Other
Wuppertal Institute: Towards a Global Energy Transformation [Pdf]
This study analyzes the deepening crisis in the availability of global energy resources and looks at ways to transform how we produce and use energy in order to create a sustainable development model. They state that "Socially just and...
BBC
Bbc Skillswise: Probability
Use fractions and percentages to solve probability problems. Skillswise provides five factsheets, four quizzes, four worksheets, and a game pertaining to probability.
Khan Academy
Khan Academy: Egyptian Mummy Portraits
This type of portrait appeared in Egypt in the first century C.E., and remained popular for around 200 years. Egyptian mummy portraits were placed on the outside of the cartonnage coffin over the head of the individual or were carefully...
Khan Academy
Khan Academy: Development of the Buddha Image
There is significant debate concerning the development of the Buddha image--where it first occurred, why, and when. Broadly speaking, the image of the Buddha emerged during the first few centuries C.E. in two major centers of Indian art...
Other
The Stoa Consortium: Acropolis: The East Slope
The East Slope of the Acropolis is an area that has not (yet) been the focus of a great deal of archaeological investigation. Early travelers and explorers noted, of course, the very large and prominent East Cave that forms such a...
Curated OER
Educational Technology Clearinghouse: Maps Etc: Drawing Asia, 1872
A chart from 1872 illustrating instructions for drawing Asia. "General instructions for drawing the continents. Make a scale by marking on a slip of paper or pasteboard the measures 1,2,3, etc., as on the sides of this map. Every measure...
Curated OER
Educational Technology Clearinghouse: Maps Etc: Drawing North America, 1872
A map exercise from 1872 for drawing North America. The map shows the general outline of the coasts, major waters and rivers, and a vertical profile cross-section of the continent from the San Francisco Bay area to Cape Hatteras....
Curated OER
Educational Technology Clearinghouse: Clip Art Etc: Cornu
A wind instrument, anciently made of horn, but afterwards of brass. Like the tuba, it differed from the tibia in being a larger and more powerful instrument, and from the tuba itself, in being curved nearly in the shape of a C, with a...