Can you read the story of Billy Goats Gruff.
https://www.youtube.com/watch?v=3QzT1sq6kCY
Sing the rhyme 'London bridge is Falling Down'
https://www.bbc.co.uk/teach/school-radio/nursery-rhymes-london-bridge-is-falling-down/zhy6jhv
Can you make a pretend river. (blue paper or fabric) Then build a bridge to cross the river.
This link has lovely ideas for bridge building