Childcraft: The How and Why LibraryWorld Book, Inc. Staff |
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abacus Ahmose angle avoirdupois beads biggest number birthday cabbages chance Childcraft art Childcraft photo color corners counting machine cube distance divided Dodecahedron dots Egyptian numeral feet Fibonacci sequence fingers five flat shape Flatland four pennies fractions gallon girl goat googol groove Here's inches Judie Anderson kilometers kind large numbers length LIDERIT long ago look magic number magic square marks Mathemagician mathematics measure meter metric system miles million Möbius strip move multiply nine number system odd number ounce pair of babies pebbles Phantom Tollbooth pick pound problems push puzzles rabbits Ribidip Roman numerals Romans seven shape called sheep side sixteen solid shape square number stands star group called string tails tell tens column thousand years ago toothpicks triangle TRUST twelve uncia unit vampires water clocks weight word that means write say wwww zero