Now and then, notice attraction going up and down (6)
I believe the answer is:
seesaw
'up and down' is the definition.
(thesaurus)
'now and then notice attraction going' is the wordplay.
I cannot quite see how this works, but
'notice' could be 'see' (notice can mean to spot or see) and 'see' is present in the answer.
The remaining letters 'saw' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for seesaw that I've seen before include "Playground rocker" , "Children's playground item" , "Lurch up and down" , "having to move from one extreme to the other" , "Alternate" .)