books.google.com - A baby kangaroo tries desperately to learn how to jump, but can't quite make the leap. . . Again and again she tries, with the hearty encouragement of a frog, a grasshopper, and a rabbit, not to mention his doting Mama. But instead of boinging he blomps, bloomps, and blomps. But then, a koala comes up...https://books.google.com/books/about/Boing.html?id=D5sdpzNrI9oC&utm_source=gb-gplus-shareBoing!