This year, NMNH director Kirk Johnson helped spearhead an effort to add up the collections of the world’s largest museums Jack Tamisiea A small fraction of the more than 50 million specimens housed in ...

If you’re reading this, you’ve probably already mastered the skill of counting. But just because something is easy doesn’t mean it’s enjoyable, so the makers of a documenting-scanning app for ...

Is it possible to count objects you can't see? If you've ever received a boxed gift, or a mysterious package from Amazon, you might have tried to lightly shake the box to try to guess its contents.

Multiply by 0, 1, and 10 using the grouping of objects, counting by tens, and arrays. Explore the Multiply by 10 facts using the grouping of objects, counting by tens, and arrays. Practice with the ...