Other formats

    Adobe Portable Document Format file (facsimile images)   TEI XML file   ePub eBook file  


    mail icontwitter iconBlogspot iconrss icon

The Pamphlet Collection of Sir Robert Stout: Volume 79


page 15


Exercises in perception of weight are given by means of tablets of wood of the same size and thickness, but of different weights. The didactic material provides three boxes, each containing a number of thin wooden tablets of (a) mahogany, (b) oak, (c) poplar.