So, if we're going to buy expensive schemes to teach children maths, can the providers please make sure that the activities make sense and aren't, you know, wrong or anything.

Just.... No, don't do that! I can't even think of an interpretation that might make that make sense.

Say the number: four thousand, seven hundred and eighty-three. Ask children in their groups to write this in figures. Write it on the board to check: 4783. What is the lowest number you can add so that all four digits change? Allow 3 or 4 minutes to try this, then take feedback. (1111 is the lowest number that can be added so that all four digits change, making 5894.) Will this always be the lowest number? Can you find a 4-digit number where all four digits can be changed by adding a lower number? Ask children to explore this, starting by finding different types of number (e.g. multiples of 10 or 100) where a lower number can be added. Ask them to write some general rules (e.g. if the number ends in 9, then the lowest number that can be added to make all four digits change is 1101.)

Just.... No, don't do that! I can't even think of an interpretation that might make that make sense.

jintybut...phlebasRe: but...jintyYestinyjoRe: but...tinyjoRe: but...celestialweaseltortipederaingirl26One does need a command of one's language to do math.

tea_and_cuddlesphlebasI'm not sure what they're talking about with the multiples of 10 and 100 though.

tea_and_cuddlesFor example, 8889 ends in 9, none of the other digits is a 9, and the lowest number you can add to change all four digits is 111, which is lower than 1101.

phlebascleanskiestinyjotruecatachresisStill, it's a really crap exercise that doesn't appear to be useful at teaching anything.

tortipedecelestialweaseltortipedephlebassaid, a sort of vaguely scientific-ish experimentation approach. They're meant to start off with 1111 and arrive at 217, discovering the Joy of Carrying for themselves along the way — at least, that's how I read the business about 9 and 1101. But by implying that 1111 is the correct answer rather than a good starting point, they've neither said what they really meant nor meant what they said. Yesno?Edited at 2008-11-27 12:20 pm (UTC)phlebascelestialweaseltinyjobluedeviBut, I thought, surely the country is full of people who would delight in coming up with good puzzles for exam papers. I know a good few who would do brilliantly at that. But I imagine they're all programming for good money, not working at exam boards.

tortipedetinyjo's background in IT, and teach them 6502 Assembler. Once they've got used to ADC^{1}they can be introduced to CLC^{2}and BCS^{3}, andvoila!— problem solved :)1 ADd with Carry

2 CLear Carry flag

3 Branch on Carry Set

celestialweaselDoes make multiplication tables easy.

"One one is one"