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.
Over at Curriculum Matters, my colleague Sean Cavanagh writes about an online site featuring virtual manipulatives for math and science classes. David Wetzel offers a variety of interactive math ...
Brainingcamp has launched comprehensive accessibility upgrades across its 18 interactive manipulatives, aligned with WCAG 2.2 AA standards. AUSTIN, TX, UNITED STATES ...
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