Open Number Lines

'Open' number lines are extremely useful fo working with numbers 'before', 'after', 'in between' etc. Here we have five marching ants forming a blank number line.

On the reverse are two rows of marching ants, so that the open number line can be extended to form 'ten more' or 'ten less' than the first row. Thus 4 will have 14 below it.

15 number lines, photocopiable masters and re-sealable bag.

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