Is Pluto a really a Dwarf? What would Grumpy say?

[Frogberto]

I knew about the mnemonic (actually, I think there's more than one), but it's a shame instead of inviting discussion about how science works, how we explore new things about our universe all the time, or even how science changes, the focus has been on "okay kids, memorize a new list". That doesn't help kids at all.