There are many other ways you could use this book for different age levels. There is reference in this book about cousins, so you could use this time to talk about relatives and family. They could draw their family or collect pictures of family members for a collage or poster. Also, the author adds in an element of counting the ducks some, so this book could be used for talking about counting with the little ones and learning about two digit numbers for children 2nd grade or possibly higher.
Little ones can enjoy marching around the room doing a “duck march” as the author refers to it in the book. Add in a little “quack-quack-quack” for some noisy animal sound fun!
The author refers to the “yellow water of the Yangtze River” and this would be a great time to do a little geography. Look up the location of the Yangtze River. This can be pointed out during the reading of the book for all the kids. You might add to this by having the older ones draw the Yangtze River on a blank map of China. Of course, you could even have the children do a little drawing of the river, etc… Also, research whether the water in the river is actually “yellow”. If it is, older chidren could research why it is.
Duck crafts are an endless activity that could be done while reading this book. I could never list all the ideas and I am sure there are a hundred options out there for free on the internet.
Snack time could be rice cakes if some variety. Rice cakes are mentioned in the book.
Play around with discussing the native language. In case that would be Chinese.
Discuss the sun rising in the east and setting in the west. Also, study the directions (N, S, E, W) and locate a compass on a map.