Watched your videos on montesori numbers. Very impressive. Have you thought of doing iphone aps with arithmetic for the older kids and/or prodigies ? I learnt t

Watched your videos on montesori numbers. Very impressive. Have you thought of doing iphone aps with arithmetic for the older kids and/or prodigies ? I learnt to add three digit numbers when I was like 6-7. I didn't understand what I was doing...like I didn't know why 7+4 was 11...but understanding can wait. Its very useful to nevertheless pattern match your way to addition & multiplication. You can learn multiplication tables upto 20 or so simply by osmosis...not repetition, but intelligent pattern matching. You look at 3 and 7 and just automatically write 1 in units place and carry over 2....reasoning can come later. There were various tricks for remembering factorials & summations & the like...it was a real blast.