I can do better than this! That's what Grumbletroll firmly believes, so he bets his friends that he can manage not to grumble for one whole day. But that's easier said than done: When his friends snatch the delicious cake right from under his nose, he'd love nothing better than to stomp his feet on the ground. And when a startled crow drops an unpleasant surprise right on his head, he wants to scream at the top of his voice. Will the Grumbletroll be able to control his anger and manage to win the bet...? Grumbletroll serves as a model to help children recognise and learn ways to cope with and even stop fits of anger and rage that we all struggle with when things don't go our way. AGES: 5 to 8 AUTHORS: Steffi & Michael Gerharz (aprilkind) live with their three children. The idea for the Grumbletroll came to them when their youngest daughter was sitting at the breakfast table with her arms folded, sulking and grumbling. Barbara van den Speulhof is a children's book author and director and producer of radio plays for children. After short periods in mechanical engineering and architecture, Stephan Pricken studied primary school teaching with a focus on art, and then graphic design. SELLING POINTS: . The Grumbletroll . . . Isn't Grumbling Today!, the second book in The Grumbletroll series by aprilkind, finds Grumbletroll looking for ways to control his anger to win a bet with his friends . Helps children ages three and up learn coping methods for their own anger and understand how to deal with the tantrums of others . A playful way of dealing with emotions that offers a lot of space for conversation, role playing, and the reader's own thoughts