Bell in Vacuum with Plate & Bell - Electric L1-Furniture & Storage-L2-Storage Solutions Incorporate the rattles in fine

Incorporate the rattles in fine motor skill exercises by guiding babies to hold and shake the rattles

Kids will enjoy matching the addition problems with the correct answers

making them ideal for use with sticky shapes

Use the puzzles to introduce a lesson on transportation

Bell in Vacuum with Plate & Bell - Electric L1-Furniture & Storage-L2-Storage Solutions Incorporate the rattles in fineBell 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.