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Made from natural wool felt by skilled artisans
and gripping pieces enhance hand-eye coordination and dexterity
promotes motor skills and hand-eye coordination
this set helps support emotional development
Bell in Vacuum with Plate & Bell - Electric L1-Babies & Toddlers-L2-Soft & Sensory Toys-L3-Rattles & Teethers Made from natural wool feltBell in Vacuum Experiment Propagation of Sound. A science experiment using a ringing alarm clock under the bell jar. As the air is pumped out of the sealed bell jar, the noise of the alarm clock fades, thus demonstrating that the propagation of sound is mediated by the air. In the absence of their medium, the sound waves cannot travel. Use with Vacuum Pump, SER1014149. Units: Each.
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