Day 2 -- we looked at Yellow Ball and My Blue Boat side by side and compared the illustrations in each book. We looked for the boat and ball to be in the same places (above, under, beside etc...) Mark didn't grasp all of it but he had fun and it's all about exposure anyway.
Day 3 -- Today the older children were present as we read My Blue Boat. It was such a fun time. They each got very excited that Mark's book title is an alliteration. They kept telling Mark "that's an alliteration, Mark" Mark would smile really big and say "yes" as if he knew exactly what that was. We also read Otters Under Water today. It has great illustrations as well. We pretended that the otters would swim beside and under blue boat.