We are very pleased to announce the third book by our bestselling writers Koos Eissen and Roselien Steur. After the worldwide success of Sketching and Sketching: The Basics, the authors now shift their focus from 'how to sketch' to 'why you sketch'.

For designers, sketching is a daily activity that can serve many goals. You can sketch to brainstorm, to find and articulate ideas or to present a project to other designers in your team or people from other departments. And of course you sketch t...

Conditional Design is the sequel to Operative Design. This book will further explore the operative in design in a more detailed, intentional, and functional manner. Spatially, the conditional is the result of the operative. Both terms work together to satisfy a formal manipulation through a set of opportunities for elements such as connections and apertures. The conditional starts with investigating not only ideas of circulation and light but also how volumes relate to the ground. These manip...