A rare German education tool to teach fractions and how to calculate with them, from ca.1930’s.
Nine varnished apples, made of wood, are sliced into segments (representing fractions (eights, quarters, thirds, halves,…) that can be folded or moved, complete with the original instructions in the lid.
The set was patented by Hugo Jung in Stuttgart in 1927 and produced, in the same city, by Rudolf Lobelenz.
The apples are in very good condition, the cardboard box has some missing sides (please see
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