Testing Your Approximate Number Sense

Early Learning Teaching Your Child Math
1

This could be used with older children to hone estimation skills.

http://www.nytimes.com/interactive/2008/09/15/science/20080915_NUMBER_SENSE_GRAPHIC.html

Chris.

2

fun! thanks for sharing !
I got 92% for 25 tests

3

Hey Chris,

Thats pretty cool.

I got 94% after 37 tests.

Maybe I can credit Soroban (shameless self promotion here*) since I seem to be able to guess the right answer if I just follow my gut feeling. The 2 times I was wrong was when I ignored my intuition.

Thanks,
Tom

4

Entertaining, but I was guessing.

26 Test 91%.

I note that I started out poorly, after about 8-10 tests I was at about 60%. I seemed to get better with time.