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Creation, Expansion, and Interaction of Economic Systems

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Simple Electric Generator Kit

Hands-on Activity

Simple Electric Generator Kit

Electric Lighting Inquiry Unit

Make Electricity From Scratch With a Simple Electric Generator Kit A 16-year-old high school student has created, simple to make, electric generator kits as a class project. They are available for pu…

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Lee de Forest – Audion

Primary Source

Lee de Forest – Audion

Electronic Music Inquiry Unit

On 25 October 1906 Lee de Forest submitted a patent application on a "Device for amplifying feeble electrical currents", which included the first form of the 3-electrode Audion. The device and…

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Phoenician Alphabet

Primary Source

Phoenician Alphabet

Information Theory Inquiry Unit

Sometime around 2,800 years ago, the Phoenicians made a major invention—the vowel! That is, they realized that instead of each symbol representing a syllable (ba, be, bi, bo, bu, ca, ce, ci, co, cu,…

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Error-Detecting and Correcting System (Patent)

Primary Source

Error-Detecting and Correcting System (Patent)

Information Theory Inquiry Unit

Richard W. Hamming, Morristown, and Bernard D. Holbrook, Madison, N.J., assignors to Bell Telephone Laboratories, Incorporated, New York, N.Y., a corporation of New York Application January 11, 19…

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Cuneiform Hands-On Activity

Hands-on Activity

Cuneiform Hands-On Activity

Information Theory Inquiry Unit

Information Theory Unit Cuneiform was one of the first writing systems, developed 5,000 years ago in Mesopotamia to record information on clay tablets. By asking students to record current …

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Edwin H. Armstrong, of Paris, France Method of Receiving High-Frequency Oscillations Patent # 1,342,885 Application filed Feb. 8, 1919 – Patented June 8, 1920

Primary Source

Edwin H. Armstrong, of Paris, France Method of Receiving High-Frequency Oscillations Patent # 1,342,885 Application filed Feb. 8, 1919 – Patented June 8, 1920

Radio Inquiry Unit

Radio Inquiry Unit While serving in the U.S. Army during World War I, Armstrong synthesized three ideas to create his superheterodyne circuit for selectively amplifying a very high fr…

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Edwin H. Armstrong, of Yonkers, NY Wireless Receiving System, Patent # 1,113,149. Application Filed Oct. 29, 1913 – Patented Oct. 6, 1914

Primary Source

Edwin H. Armstrong, of Yonkers, NY Wireless Receiving System, Patent # 1,113,149. Application Filed Oct. 29, 1913 – Patented Oct. 6, 1914

Radio Inquiry Unit

Radio Inquiry Unit According to the E.H. Armstrong, wireless receiving system patent, “The present invention relates to improvements in the arrangement and connections o…

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Laboratory notebook, recording Edwin H. Armstrong’s discovery of superheterodyne reception

Primary Source

Laboratory notebook, recording Edwin H. Armstrong’s discovery of superheterodyne reception

Radio Inquiry Unit

Radio Inquiry Unit From the Rare Book & Manuscript Library, Columbia University Visit Source Download PDF …

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Skyscrapers Hands-On Activity

Hands-on Activity

Skyscrapers Hands-On Activity

Skyscrapers Inquiry Unit

Skyscrapers Inquiry Unit Download PDF Skyscrapers Hands-On Activity Prompt for the students: Using only the materials provided, teams of students will design and build a structure as tall as p…

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Make a Light Bulb with Batteries

Hands-on Activity

Make a Light Bulb with Batteries

Electric Lighting Inquiry Unit

See video demonstration here: How to Make a Light Bulb with Cardboard and Pencil Lead Materials Safety Glasses Glass Jar Cardboard paper towel tube, or toilet paper tube Either 2 long w…

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