From the book reviews:“The book … exemplifies how students could be actively engaged in their learning through interpretations and manipulations of models and other modes of external representations (ERs) … . I find this book a much-needed collection of resources and supportive research. Treagust and Tsui gathered under the same roof remarkable and thoughtful examples for using ERs in the classroom. … The book provides a comprehensive theoretical background, in addition to multiple practical examples that teachers could adopt in their classrooms.” (Gili Marbach-Ad, Science & Education, January, 2015)