Take, for example, 8 + 6 * 9. Now, according to OOO you have to complete the problem in this order: 6*9 = 54 + 8 = 62. 62 is the right answer.
However, if you enter "8 + 6 * 9" in the calculator, the calculator will do EXACTLY what you say and give you this answer: 8 + 6 = 14 * 9 = 129. THE WRONG ANSWER. Thus, calculators LIE. :)
Now, you can use calculators... if you do the order of operations yourself and modify how you enter the problem into the calculator.
For homework, the kids have problems numbers 33-44 -- the true or false problems. They should show their work on another sheet of paper to prove that their answer is true or false.
This sheet I do not have electronically, so I can't post it online yet. But I am going to try and remember to post answers. I've got to set a reminder for myself or something! (I was supposed to post answers last night... and that didn't happen! ;) )
