Whizzy Willow’s First Day at School: Leaf the iPad Alone! New Book Gets Kids Reading, Learning & Laughing Uncontreelably! Whizzy Willow’s First Day at School’ is a charming and beautiful book for young children, teaching them about everyone’s unique qualities, tree names, their times tables and even sentence starters – all through a story inspired by trees. From Whizzy Willow himself to Mr. Oak, the book’s unique cast of characters will have young readers laughing, learning and always looking upwards!