Lets Go Investigating Temperature, Lab book, Aimed especially for elementary teachers, this lab book contains ten engaging temperature experiments, Activities for grade 2 through 5, Lots of teacher tips, Clear illustrations to facilitate underst
Spoke Pulley, ideal for use with photogates sensors. 65 mm diameter with spokes. Pulley, mounted on free running ball bearings with minimum friction. Mounted on a removeable rod of 150 x 10mm diameter
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