1.1 Billion Objects and Counting: Inside the Effort to Tally Natural History Specimens Around the Globe This year, NMNH director Kirk Johnson helped spearhead an effort to add up the collections ...

Findings of a study suggest using a ‘hundreds chart’ showing numbers one through 100, beginning with one in the top-left corner, fosters children’s counting by 10s.

You often have to make judgments about how many objects you see. New research suggests that the degree to which the objects are typically seen together affects those judgments.