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# Mental arithmetic improving remote control

Let kids learn as they surf tv channels
 (+14, -1) [vote for, against]

A remote control, but with a '+' and '-' key on it, so when selecting channel 453 and you're currently on channel 189, you type '+' 264. Obviously with an override, so I don't have to use it in maths mode.

Limited to add and subtract. Don't think it needs Sin, Ln, Log, cube-root etc.

 — paraffin power, Mar 08 2005

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You'd probably want to couple this with a randomisation of assigned channel number, so as to avoid kids performing over and over again the same additions and subtractions between their few favourite channels.
 — calum, Mar 08 2005

oh very good! my kids learned to read from the TV guides.
 — po, Mar 08 2005

[crash] can spell the names of all the Pokemon, other words he's still learning...
 — wagster, Mar 08 2005

Bun for bringing back a happy memory of my then 2 year-old son spending a puzzled few minutes pointing my calculator towards the TV.
 — AbsintheWithoutLeave, Mar 08 2005

 // avoid kids performing over and over again the same additions and subtractions between their few favourite channels.//

Actually, I think the repetition is useful. Then if she someday needs to subtract 36 - 29, she can remember "Ah, 36-28 = Seinfeld, so 36-29 must be seven".
 — phundug, Mar 08 2005

 surely we should have multiplication, division, squareroot and square. Need channel 16? 4square.

 I can see this becoming a bit like Carol Vorderman on Countdown*. If the remote was just armed with numbers 0-9 and a range of mathematical functions, the challenge will be to get to the right channel number in double-quick time. Splendid.

*Countdown. Daytime TV quiz. Containing mathematical competition section.
 — jonthegeologist, Mar 08 2005

For kids? Heck, I need this for myself!
 — Machiavelli, Mar 08 2005

 I couldn't help but think of a cable channel in the US called "e" and wonder how you would get there from an integral channel number.

(Actually its called "E!" but humor me).
 — krelnik, Mar 08 2005

Let's see, volume 2 raised to the power of 10...
 — FarmerJohn, Mar 09 2005

Very good!
 — DesertFox, Mar 09 2005

You're scaring me. I still haven't got over the Particle Physics category on Jeopardy yesterday.
 — mensmaximus, Mar 09 2005

//Actually its called "E!"//
So you'll need a factorial button as well.
 — angel, Mar 09 2005

e! = Gamma(e+1) = 4.26082
 — Detly, Mar 09 2005

Wow, a halfbakery full of mathmaticians. I'm spooked.
 — froglet, Mar 09 2005

9i+15, for the imaginary channel.
 — jonthegeologist, Mar 09 2005

2 + 0 = 2
 — half, Mar 09 2005

"OK, who broke the TV with 238/0 ?"
 — FarmerJohn, Mar 09 2005

[Hits "twice the inverse of square root of pi times integral over real numbers with respect to 'x' of exponential of negative 'x' squared" button]
 — Detly, Mar 10 2005

I'd have to cheat off other people's remotes.
 — schematics, Mar 10 2005

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