It is high summer in the woods and a mother bear has two cubs who will not sit still. They climb trees, strip blueberries off the bushes, sniff around a beehive rather too closely, and end up splashing in the pond, which is roughly the itinerary of any toddler in July.

The mechanics are what set this series apart. Every spread carries a lift-a-flap, and some of those flaps open into a sturdy board pop-up that stands the scene up off the page. A child does not know which they are getting until they lift, and that is exactly why the book gets opened again the next morning.

Ten thick pages at seven inches square, written by Rusty Finch and illustrated by Katya Longhi. Graded from 18 months. Buy it with Autumn and Winter and you have the whole year on one shelf.