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| Grades 5-12
See students build their own series circuit. Includes a "D" cell battery holder (batteries sold separately), knife switch, 2 miniature light bulbs, 2 lamp holders, 4 connector cords, and instructions. Grades 5 and up.
| Grades 6-12
Limited quantities available. Measures air velocity: 0-30 m/s, 0-90 km/h, 0-5,860 ft/min, 0-55 knots, 0-65 mph. Measures air temperature: -10°C to 45°C. Requires a 3V battery (included). Grades 6 and up.
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