"Reminiscent of Leo Lionni...this is just the right size for small hands and for sharing one-on-one and also offers an opportunity to talk about the different elements of the story, including cooperation, creativity, and sharing as well as basic physics and math."--Booklist

"This deceptively simple and creative book is loaded with fun...Readers might be fooled into thinking this is just a concept book, but Walsh gives them so much more...This book is full of wonder."--School Library Journal

"With consummate skill, Walsh tells a taunt and dynamic story while introducing some basic physical science to preschoolers...an impressive balance of composition, color, and narrative content; the spreads alternate between displays of potential energy and kinetic energy. A lively yet minimal text supports the story beautifully; there's not a word out of place."--The Horn Book Magazine

"The textures and bright colors in the author's cut-paper illustrations pop off the pages...making it easy for young readers to focus on the mathematical concept. Tips the scales in a subject area surprisingly lacking."--Kirkus Reviews