Does zero have value?
This was the question that launched a very interesting math talk today. Here is an excerpt of our discussions.
“Zero does not have value because if you add it to a number, that number does not change.”
“I think zero does have value because all numbers have value. For example, one person might have 5 trading cards and someone else might have zero cards. Saying someone has zero of something is still saying you have an amount of something.”
“I respectfully disagree because zero is not a number. You don’t say zero when you count.”
“Yes, it is a number because it shows the value in place value.”
“It does have value because zero means nothing.”
“I think zero does not have a value because if you have $0, you have no money.”
“You can be zero years old. So, it has value.”
“But when you are born, you’re not zero, you are one day old. And what about the nine months before you were born?”
“I think zero does have value because if you put a 0 after 10, the value increases.”
After I did a little happy dance inside – impressed with all the thoughtful discussion, we read a great little book by Kathryn Otoshi, 
and afterwards, students reflected on how, or if, their thinking changed.
” I am so confused. I thought zero had no value, but now it turns out, it does have value.”
” I do think zero is a number now, but I’m still not sure it has value.”
“This story really got me thinking about zero a lot more.”
There were many other perceptions about numbers that came up in our discussion that we will further explore and lead us nicely into fractions and decimals.
Reminders for tomorrow: Terry Fox Run and Get Acquainted activities. Be prepared to spend a good portion of the day outside.Spelling Tip homework due. HWDSB is encouraging people to recognize Orange Shirt Day in recognition of the effects of Canada’s Residential Schools.