The natural extension to adding and subtracting large numbers is to learn how to do the same with amounts of money. The students have been exploring Canadian coins. They learned the significance of the images that are on our coins.
They should be able to tell you why our dollar coin is called a 'loonie.'
They may be asking you for opportunities to practise counting coins the proper way, starting with the larger value coins and adding down to the smallest coins. Yes, they get to practise counting with pennies. This is the bet time to introduce the idea of 'rounding up' and 'rounding down' since that is what we now do as we pay for our purchases.
I am sure that they all came home tonight excited about our dam building challenge. Please visit our bp energy blog by clicking on the link found on the right hand side of the screen. TONS of pictures!
Tons of learning and success!