Saturday, September 7, 2013
Staying Alive...with Real Life Math Stories
I've started allergy shots again...something I've done repeatedly over my lifetime. I've never experienced anything more than a little localized reaction and since I've been on shots since May, I didn't really expect much at a recent injection.
But you need some numbers:
With each new bottle of serum, I start with a tiny amount, .1ml, and then move up to .2, then .3...each time going up by .1 until I reach .5 and then begin a new bottle with a stronger concentration. Last week, I received my second injection from the newest bottle, or .2ml. Tiny amount, right? Much less than those biggies at .4 or .5. Insignificant, really.
Hardly. Within 45 minutes of my shot I was in full allergy attack: sneezing, coughing, itchy throat, runny nose, and the scariest...wheezing, with air passages closing. To make a scary story short, I followed protocol and recovered.
But here's the math part...
I saw the allergy nurse this week and reflected on how odd the experience was. It was such a tiny amount: only .2ml. Ah, she said...that's what she used to think, too. Until someone pointed out that something significant happens during the .2ml shot. Can you figure it out? Again, I always get injections in this order:
What's significant about the .2 injection? Mathematical minds want to know... Leave your comments below.
P.S. This is a reminder to collect "real life" stories like this to share with kids. Make it real! (But perhaps not THIS real!) :)
P.P.S. School starts up for me this week. Big Math Monday Blog Hop announcement on Monday!