From the vacuum description and advertisement in the PDF, how long do you think its cord must be?
Thanks to Brian Shoemaker, Newton, MA teacher, for the idea and pictures.
It's Halloween and this is your neighborhood. How long will it take you to trick or treat at every house in your neighborhood?
Possible conversation with students:
How long will it tak...
Otha Anders used picking up pennies as a way to remember to pray. In this 3-act activity we try to estimate how much he actually collected and stored in 5 gallon water jugs. This ...