Teachers often use manipulatives—boxes, shapes, figures and games—which students can handle during in-class activities to explain math and science concepts. A colleague of mine forwarded me a link to ...
ENID, Okla. — Take 25 pennies. Now take out six and put them to the side. How many are left? Put three back. How many do you have now? Now put them all together and divide them into five equal piles.
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