Learn about all of the animals that coexist in just one tree that a classroom planted in this fun, informative, cumulative picture book in the tradition of This is the House That Jack Built.A class plants a tree in the playground, and together, they watch it grow. There is no shortage of action to observe in its branches: a robin protecting her eggs from a squirrel and her kits, a lizard stalking a spider, and a hawk swirling around overhead. Within this tree is an entire ecosystem, all created by the class who planted it. Beloved children's book creator Kate McMullan has crafted a story that will encourage kids to cultivate a love of nature as they observe the world living inside their backyards.