A set of guidelines adopted by 45 states this year may turn children into "little mathematicians" who don't know how to do actual math. A few weeks ago, I wrote an article for TheAtlantic.com ...
In the age of smartphone calculators and voice assistants, multiplying large numbers by hand may seem like a quaint and entirely unnecessary skill. However, you never know when you’ll need to do quick ...
Find out what multiples are and how to sort multiples of 2 and 5. Doubling numbers Learn how to make doubles using ten frames, addition and multiplication. Counting in twos, threes, fives and tens ...
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