My nephews, Danny and Barney, and my niece, Gina, always help me
rake the leaves. First we rake them into big trash bags, then they take the
bags and empty them at the curb, where a leaf removal truck comes to pick them
up. The truck is coming next week, so this weekend we were all outside raking.
When we were finished for the day, we had raked enough leaves to fill 5 huge
Danny and Barney saw a chance to make some money.
"Hey aunty, I will take the bags to the curb if you pay me 10
cents a bag." said Danny.
"That sounds fair" I said.
"Wait, Aunty!" said Barney. "You haven't heard my
offer yet. How about I charge you a nickel for the first bag, 2 nickels for the
second bag, 3 nickels for the 3rd bag, 4 nickels for the 4th bag and 5 nickels
for the 5th bag."
Hmm…. What do you think%3f Which boy is offering me the better deal
on this job%3f
Use your estimation skills to predict which boy might be
offering the better deal before beginning.
Which boy would be offering the best deal if there were 10
bags of leaves%3f
Is there ever a point where the cost would be the same for
both boys for a specific number of bags%3f
DuPage Children’s Museum, 2003
Where is the Math%3f
developing fluency using mathematical operations