training frustrations

I had to show my apprentice today how to use the modulus operator, as he just didn't get it.

But before that I had to explain how to divide integers leaving a quotient and remainder. He didn't get that either.

"Ok, so tell me the remainder of one divided by two..."
(several seconds pause)
"That's a bit hard."

I ended up drawing diagrams and using coins to explain how to do division. Just what are they teaching them these days??

<=> sounds like the type of operation PHP would support to add to the existing empty, isset, is_null, ==, ===, etc. insanity.