# Reality check

by stu
(california)

Precision Mathematics

So many people do not "think" about what happens to them on a day-to-day basis. Instead they just take it on faith that what someone else has told or given them is true.

Being able to quickly estimate quantities, particularly in different measurement systems, can give one a leg up in life, by enabling him or her to assess whether something makes any sense. Having a gut feeling for what order of magnitude something should be is always a good first approximation--did the car salesman just charge you too much, are you paying too much for your phone service?

Being able to convert units in the metric system has application in science as well as everyday life, and being able to understand metric prefixes leads to both estimating fundamental quantities and orders of magnitude. You can quickly figure out if it makes sense to drive versus fly to a city that is 500 kilometers away. You can impress friends, family, and co-workers with "intuition" (actually rounding conversion factors and using order-of-magnitude estimates) about how much damage might occur if they accidentally drop their phone from waist level or down three flights (12 meters) of stairs.

Math in general and rough estimates in various measurement units in particular can help quickly assess the world around and give a reality check when interpreting why something happens or whether it is possible and accurate.

Barry's Response - As you so adroitly point out, we use math in everyday life much more that we may realize. Thanks for your insights and your reality check, Stu.

## Hey there!

I'm going to talk about something super fun - measurements!  Like how long your elephant's trunk is or how many cookies you can fit in the trunk your car.  Let's go on a measurement adventure!

Let's start with the meter.  It's like a magic stick that tells you how far things are.  Imagine a bald eagle spreading its wings - that's almost a meter!  Wowzers, huh?  Like "How Far Can You Flap?"

Next, the kilogram.  It's just a way to know how heavy things are.  A kilogram is like a car trunk full of cookies; well not quite, but you get the point.  That's a lot of cookies! I bet your elephant loves them!

Then there's the liter.  L-i-t-r-e (Officially) - that spells fun!  It's like a big juice box for adults.  Can you drink a lot of beer?  Put it in a one-liter container and count the gulps - one, two, three!

...TOGA!!!

Did you know the metric system is all about tens?  It's just like counting with your fingers and toes.  Imagine playing hide-and-seek and counting to ten - that's metric!

That's it, my friends!  Metric is like Sesame Street - simple, exciting, and full of surprises.  Who knew measuring could be so much fun?  That bald eagle is one Big Bird...🐤

That is what I do on a full-time basis.  Find out if it is necessary for your project.