rectangle areas

these are based on KS2 SAT (for 11 year olds) questions in England

a ppt is here

[see also the revamped 'lengths' resource, here]

involving some algebra

equation forming and solving

these questions are adapted versions of questions from the KS2 SATs (for age 10 to 11 year olds at the end of their primary school years, England)

a ppt is here

doubling and halving

these questions are adapted versions of questions from the KS2 SATs (for age 10 to 11 year olds at the end of their primary school years, England)

a ppt is here

these might be called 'pre-algebra' in that a trial and improvement technique is just fine but could involve algebraic considerations e.g. a simplification of the problem and an ability to potentially solve similar problems

lengths

these are adapted versions of questions from the KS2 SATs (for age 10 to 11 year olds at the end of their primary school years, England)

a ppt is here

it can lead on to more general considerations, involving algebra

this can lead on to a consideration of general cases: