Donald Trump has promised to count the bullion held at Fort Knox, the famed store of the US government’s precious metals, “to make sure the gold is there”. Almost 150m ounces of gold ...

Kindergarten and prep-school teachers can use 'body-tallying that involves body parts and one-to-one correspondence from counting systems ... their students count to 20. The elaboration for ...

Chemistry, mathematics and physics are central to our understanding of nature. Physics explores the fundamental laws of mechanics, electromagnetism, quantum mechanics and relativity. Chemistry studies ...