**Below is an extract from a piece about teaching kids through asking questions, in this case binary arithmetic.**

**39) Okay, let’s go back to our two-fingered aliens arithmetic. We
have**

**
0 zero**

1 one.

1 one.

**What would we do to write “two” if we did the same thing we do over
here [tens] to write the next number after you run out of numerals?**

**
START ANOTHER COLUMN**

**40) What should we call it?**

**
TWO’S COLUMN?**

**41) Right! Because the first number we need it for is ___?**

**
TWO**

**42) So what do we put in the two’s column? How many two’s are there
in two?**

**
1**

**43) And how many one’s extra?**

**
ZERO**

**44) So then two looks like this: [pointing to “10”], right?**

**
RIGHT, BUT THAT SURE LOOKS LIKE TEN.**

**45) No, only to you guys, because you were taught it wrong [grin]
— to the aliens it is two. They learn it that way in pre-school just as
you learn to call one, zero [pointing to “10”] “ten”. But it’s not really
ten, right? It’s two — if you only had two fingers. How long does it take
a little kid in pre-school to learn to read numbers, especially numbers
with more than one numeral or column?**

**
TAKES A WHILE**

**46) Is there anything obvious about calling “one, zero” “ten” or
do you have to be taught to call it “ten” instead of “one, zero”?**

**
HAVE TO BE TAUGHT IT**

**47) Ok, I’m teaching you different. What is “1, 0” here?**

**
TWO**

**The rest is here**