Sydney and the Whalebird

WALT: We are writing about a book that we've read.

Sydney and the 
Whalebird
Sydney's latest invention has left poor bill stranded on the beach.Every attempt to rescue Bill fails, until Sydney has the brilliant idea of building a hot-air balloon. But as bill and Sydney float higher and higher in the sky, they start to get very worried. What can Sydney do to get them safely back to there home.