Ungraduated rulers, demarcated squares, and non-demarcated squares made of plastic, wood, and metal for teaching and learning purposes

'demarc':3,8 'learn':19 'made':10 'metal':15 'non':7 'non-demarc':6 'plastic':12 'purpos':20 'ruler':2 'squar':4,9 'teach':17 'ungradu':1 'wood':13

Measuring devices for distance, volume, and area, namely, folding rulers, tape rulers, other graduated rulers, graduated and ungraduated containers; educational software featuring instruction in understanding the metric system; interactive multimedia software recorded on CD-ROM and DVD for understanding the metric system; downloadable computer software to aid in understanding the metric system; and electronic publications recorded on computer media, namely, periodicals and instructional texts describing the metric system

'aid':48 'area':7 'cd':35 'cd-rom':34 'comput':45,59 'contain':19 'describ':66 'devic':2 'distanc':4 'download':44 'dvd':38 'educ':20 'electron':55 'featur':22 'fold':9 'graduat':14,16 'instruct':23,64 'interact':29 'measur':1 'media':60 'metric':27,42,52,68 'multimedia':30 'name':8,61 'period':62 'public':56 'record':32,57 'rom':36 'ruler':10,12,15 'softwar':21,31,46 'system':28,43,53,69 'tape':11 'text':65 'understand':25,40,50 'ungradu':18 'volum':5

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