Texas Instruments
Texas Instruments: Sas Triangle Congruence
This activity will help learners visualize the construction of congruent triangles and conceptualize properties through measurement and movement of their construction. Students will need access to the TI-84 Plus Family.
Texas Instruments
Texas Instruments: Simple Programs to Apply Formulas
Students learn how to write simple programs to evaluate formulas in several variables for lists of data. They apply these skills to the computation of areas, volumes and surface areas of familiar geometric solids.
Science Struck
Science Struck: A Layman's Guide to How a Sling Psychrometer Works
A sling psychrometer is used to measure humidity levels. Read about its history, how it works, its design, and how to use it. Includes a relative humidity table.
University Corporation for Atmospheric Research
Ucar: Satellites and Weather Teaching Box
Help your middle school student learn how satellites help make weather forecasts more accurate and how the COSMIC satellites collect data about the atmosphere by measuring bending radio waves.
Science Struck
Science Struck: What Is a Bolometer and What Is It Used For?
A bolometer is an instrument used to measure radiant energy. Learn about its history, its advantages, how it works, some different types, and its important applications.
Famous Scientists
Famous Scientists: Arnold Orville Beckman
A short biography about Arnold Orville Beckman, once considered to have revolutionized the study of chemistry and biology with his work in bioscience instruments.
National High Magnetic Field Laboratory
Magnet Academy: Galvanometer
This tutorial illustrates how a galvanometer, an instrument that detects and measures small amounts of current in an electrical circuit, works. (Java tutorial)
National High Magnetic Field Laboratory
Magnet Academy: Rheostat
After discovering the nature of electrical resistance, scientists devised instruments like this one to measure and control it. (Java tutorial)
Other
Hellenica World: Ancient Greek Medical Inventions
Learn about various medical devices invented and used by the ancient Greeks including "a portable waterclock used to measure the pulse of patients" and a "surgical instrument, known as 'the spoon of Diokles.'"
Other
Elms Environmental Education Center: How to Use a Clinometer
Offers instructions in how to use a clinometer, an instrument used by foresters for measuring angles in order to determine the height of a tree. The mathematics behind a clinometer is also explained.
Texas Education Agency
Texas Gateway: Sound Interference and Resonance: Standing Waves in Air Columns
By the end of this section, you will be able to define antinode, node, fundamental, overtones, and harmonics; identify instances of sound interference in everyday situations; describe how sound interference occurring inside open and...
Other
Museum of Ancient Greek Technology
This is a virtual exhibition of inventions from ancient Greece that have been reconstructed by Kostas Kotsanas after over two decades of study and research. Click on 'The Museum' link at the top of the page to read an explanation and to...
Creative Science Centre
Creative Science Centre: Mobile Phone Absorption Wavemeter
An absorption wavemeter is a device which can make measurements on the strength of radio emissions and so this instrument is an essential item for investigating the mobile phone. In principle an absorption meter is a simple device that...
Science Struck
Science Struck: Types of Rain Gauges
Read about two types of rain gauges and how they work.