Leonard, Robert J. (Robert Josselyn), 1885-1929, Berkeley (Calif.). Board of Education · [Berkeley, Cal.] Printed by order of the Board of Education, Berkeley Reporter, printers · leaf 12
he width of figure 4 is nineinches, and of figure 5, twelve inches, as one-third of nine, orthree, is added to nine. Go through this process is variousways, using other numbers, until it is perfectly clear to thechildren. This should be presented when they are about to Cardboard Construction 11…
Paper work
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten15unit-631-351.webp)
