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250 pieces: these transparent counters that are great for classroom use
5 Inch / 38mm
Diameter 4cm
Magnetic Needles
Hands-on manipulatives: these counters are great for learning counting
Spectrum Tube Apparatus Barometer 250 pieces: these transparent countersSpectrum Tubes demonstrate the wave properties of different gases. Set of 6x standard size high quality Spectrum Tubes. These spectrum tubes are for the Spectrum Tube Single Power Supply and the Spectrum Tube Carousel Power Supply. Power Requirements: 115 OR 220 VAC, 50 60 Hz. An electrode is sealed in each end and attached to a metal end cap with a loop for convenient hookup to wire connections. Each spectrum tube includes an activity guide.
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