Learning for toddlers – a clue for Gran in it? (5-8)
I believe the answer is:
potty-training
'learning for toddlers' is the definition.
(teaching toddlers to use the toilet)
'a clue for gran in it?' is the wordplay.
I cannot quite see how this works, but
'a' is found in the answer.
'in' is present in the answer.
'it?' could be 't' (abbreviation. e.g. in 'tis) and 't' is found in the answer.
This explanation may well be incorrect...
(Other definitions for potty-training that I've seen before include "Behavioural lessons for the very young" , "Post-nappy education?" .)