Simple economics in school

When I taught high school level economics I kept it very simple. I hoped to instill in students a sense of exactly what they might deal with in real life. One such lesson involved what sales meant.

One idea was that when an item was on sale for, say, 10% off, that they did not save ten percent but only spent ten percent less on it. That doesn't make a purchase bad of course. But unless they actually put that ten off in the bank, they hadn't saved anything. I in fact had gotten that idea from me Pops years earlier, when I was maybe, heh, heh, ten. A friend of his was showing the old man something and bragging about the ten off he saved. Dad merely asked, "So's where's the money you saved?"

Another concept was the old buy one get one free come on. You aren't getting either one free: you're spending half as much on each. Again, that doesn't mean it's a bad deal. But you are not getting a freebie. Free means all yours at no cost and with no strings attached, no demands on you as a consumer.

I don't know if these helped but it was what I taught.