To review the transactions in your child's account, you can view the account Statement. This can be found in two places:
From tapping the Account Total at the top of your child's dashboard.
Under your child's settings, you can also tap Statement.
To view previous months, just scroll left and right.
If you'd like to review the transactions for a specific pot (Spend, Save or Give), you can do this by clicking the total from within the pot.
From Statement you can view:
Allowance received
Funds boosted or removed
Goals that have been approved and fulfilled
Earnings from completed Extra jobs (PLUS/Card feature)
Interest earned from funds stored in Save (PLUS/Card feature)
Regular outgoings (PLUS/Card feature)
From History within a pot you can view:
Funds boosted and removed within that pot
Transfers between pots
Auto-saving amounts added
Interest earned on the Save pot (PLUS/Card feature)