C HA PTE R
Demand and Supply
ach day, we buy an assortment of goods and servicesa
meal, a snack, maybe a magazine. What determines the Teach a parrot to say demand and supply,
price of the pizza slice we buy at lunchtime? the selection of and youve cr
2013-2014 School Year Grade: 7th
Excuse me, sir, do you have the time?
What? How? For Whom?
Summary of the task, challenge, investigation, career-r