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Add coloured liquid to the transparent model to demonstrate how the heart and lungs work together for oxygen exchange
This Percussion Plus mallet for temple blocks has a smart wooden finish
Great for workshops
Listing all 40+ phonemes
making it perfect for the smaller room
TICKER TAPE TIMERS, 6V Including Tape & Disk, Kit Swimming Add coloured liquid to theThese devices use an electromagnet which activates a striker, producing dots via a carbon disk on a ticker tape. The dots are produced at a rate of 50 60Hz depending on mains frequency. With 4mm terminal sockets.
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