Volume visualization device and volume teaching material

摘要

PROBLEM TO BE SOLVED: To provide a volume visualization device for visualizing the amplitude of a dense wave of air in an easy-to-understand manner, and a teaching material for volume education utilizing the volume visualization device. SOLUTION: An internal space 5 is visible from the outside and has an opening 23 at the lower end, a film body 3 that shields the opening 23 and is fixed to the wall body 2, and an easy arrangement in the internal space 5. A volume visualization device 1 including a floating body 6 is provided. The sound sparse wave 8 vibrates the membrane body 3, and the easy levitation body 6 floats to visualize the volume. A teaching material for volume education including a sound source body 7 and a volume visualization device 1 is provided. Since the scale line 21 is drawn on the wall body 2, it becomes easy to understand the volume. The effect can be enhanced by combining the sound emitted by the sound source body 7 with the resonance frequency of the film body 3. [Selection diagram] Figure 2