Polymath 840

[rebartree48]

mathematical aids for young pupils

[kettledrum]

How many letters? Do you have any of them?

[Captain2]

Cuisenaire rods? LiK taught me that the other week ;))

[shoota]

How many letters? Any placed....?

[Mamyalynne]

1a) Mathematical aids for young pupils (10,4)


Cap'n has it

[fiction-factory]

I'd have expected calculators or (if it was old crossword, log tables)- I have never heard that term before.
rebartree- you may find these guidelines useful. It's so much easier if the letter count and known pattern are given
http://www.theanswerbank.co.uk/Quizzes-and-Puzzles/article/the-answerbank-quizzes-and-puzzles-guidelines/