Curated OER
Air Pressure & Barometers
Fourth graders observe, measure, and record data on the basic elements of weather over a period of time (i.e., precipitation, air temperature, wind speed and direction, and air pressure). Then, they make a barometer and keep record of...
Exploratorium
Straw Oboe
Trim the end of a straw to construct a vibrating wind instrument. Everyone in your class can make their own during a lesson on sound waves.