Curated OER
The Four Elements
Young, native Spanish speakers learn about the four elements: earth, fire, air, and water. As a group, discuss the different senses you might use with each element. This is a teacher-centered lesson, but consider having individual...
Curated OER
Four-Note Range in Music
Students sing melodic patterns and songs within a four-note range using sol, la, and mi. They echo simple melodic patterns and maintain the tonal center singing two Thanksgiving-related songs, "Hello, hello..." and "Five Fat Turkeys."
Nine Planets
The Nine Planets: The Sun Facts
Statistical data, general features, key terms, characteristics, and influences of the sun.
Other
The Apollo Society: The Solar System
Contains a small set of images of solar system objects and a series of links to information about all solar system objects. Solar System Tours link to excellent image collections.
Chem Tutor
Chem Tutor: Solutions
An in-depth look at solutions and their properties. Includes practice problems for calculating solution concentration.