EQUIPMENT SOLD AS A UNIT FOR PLAYING AN EDUCATIONAL TOY BUILDING GAME COMPRISING A SET OF ELONGATED BLOCKS OF SQUARE CROSS-SECTION AND OF INCREASING LENGTH AND HAVING PERFORATIONS FOR INTER-CONNECTING BY RODS TO HELP CHILDREN LEARN BASIC MATHEMATICS AND THE METRIC SYSTEM

'basic':41 'block':18 'build':11 'children':39 'compris':13 'connect':34 'cross':22 'cross-sect':21 'educ':9 'elong':17 'equip':1 'game':12 'help':38 'increas':26 'inter':33 'inter-connect':32 'learn':40 'length':27 'mathemat':42 'metric':45 'perfor':30 'play':7 'rod':36 'section':23 'set':15 'sold':2 'squar':20 'system':46 'toy':10 'unit':5

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