it can be helpful to start an nth term rule with n = 0 rather than n = 1

linking the 'n' number to time might be helpful

## Friday, 30 January 2015

## Wednesday, 28 January 2015

### linear rules, not through the origin

why 'm' and 'c' are these letters (maybe not true but it makes a sensible story)

many thanks to Dan Meyer and also Andrew Stadel for the rather wonderful idea of using the heights of various numbers of polystyrene cups as an example of a linear relationship

this lesson really needs the practical use of polystyrene cups

these pictures are from Andrew Stadel - his development of the 'stacking' task is also rather wonderful

Fawn Nguyen's account of her lesson sequence on 'stacking cups' is also worth reading

what is the height and lip height for these cups?

stacks of two different sized cups are explored in Andrew Stadel's videos

Labels:
nth term,
straight line graphs

## Tuesday, 20 January 2015

## Monday, 19 January 2015

### spring relationships

not yet time for the Earth to increase its tilt relative to the sun

but this is to accompany 'autumnal relationships'

that, so this, was based on 'Math Enrichment' by Anne Joshua

but this is to accompany 'autumnal relationships'

that, so this, was based on 'Math Enrichment' by Anne Joshua

Labels:
linear equations,
linear relationships

## Sunday, 18 January 2015

### squares inside rectangles prequel

number practice - maybe without a calculator

these tasks could precede squared squares and rectangles (1)

and (2)

these tasks could precede squared squares and rectangles (1)

and (2)

Labels:
problem solving,
sums

### what's my rule?

this is a fairly well known task

and well worth trying if you haven't already done so

working in silence at the start of the lesson can be very powerful ( as Laurinda Brown always strove to point out)

and well worth trying if you haven't already done so

working in silence at the start of the lesson can be very powerful ( as Laurinda Brown always strove to point out)

Labels:
expressions,
linear relationships,
relations

## Friday, 16 January 2015

### selecting thoughtfully

the second of these resources follows a fine series of posts on MathArguments180 'which values of

in case students do not notice, these expressions involve consecutive digits

they could try to create their own...

it's not always easy but students can be encouraged to find (a) more than one answer (b) a family of such answers (with a generalisation)

*x*do we choose?' (number 330)in case students do not notice, these expressions involve consecutive digits

they could try to create their own...

it's not always easy but students can be encouraged to find (a) more than one answer (b) a family of such answers (with a generalisation)

Labels:
expressions,
substitution

## Wednesday, 14 January 2015

## Monday, 12 January 2015

### plank magic squares

these involve using 'p' as a symbol for a plank of unknown length

see the plank algebra post

substitute the number given to check that you do obtain a magic square (with no numbers repeated)

see the plank algebra post

Labels:
expressions,
substitution

Subscribe to:
Posts (Atom)