D.W. learns to ride a two-wheeler with big brother's help, in this new book starring Arthur's irresistible little sister. Full color.

D.W. learns to ride a two-wheeler with big brother's help, in this new book starring Arthur's irresistible little sister. Full color.

Arthur's sister D.W. offers friendly, no-nonsense advice to help preschoolers get through their first day of school in this "New York Times" bestseller, now in paperback. Full color.

In this Franklin Classic Storybook, Franklin has been chosen to play the Nutcracker Prince in his class’s Christmas production. But will he be too nervous to say his lines when the big night arrives? This fixed-layout ebook, which preserves the design and layout of the original print book, features read-along narration by the author as well as music and sound effects.

D.W. graduates from a tricycle to her first two-wheeler and under Arthur's careful guidance learns the basics of bicycle safety.

D.W. graduates from a tricycle to her first two-wheeler and under Arthur's careful guidance learns the basics of bicycle safety.

December, AD39. While enjoying the Winter Festival holiday at his adopted daughter’s home in the Alban Hills, Marcus Corvinus discovers that an outwardly respectable pillar of the community, local politician Quintus Caesius has been discovered beaten to death at the rear entrance of the town brothel. Questioning those who knew the victim, Corvinus is dismayed to find Bovillae a place of small town secrets, bitter feuds, malicious gossip and deadly rivalry: a world away from the sophistication of Rome. As he is to discover, there are several suspects with reason to bear Caesius a grudge. But who would hate him enough to kill him? And what would a supposedly solid citizen be doing visiting the local brothel?

A classic Arthur Adventure- now on CD! What makes a story entertaining? That's the question Arthur asks himself when Mr. Ratburn gives a creative writing assignment to his class. When D.W. yawns through Arthur's first story, he worries that his tale isn't exciting enough. Is the setting too humdrum? Maybe he needs to research his subject more thoroughly. Or perhaps humor is the key to creating a lively tale! With every new angle, Arthur's story takes one more hilarious step further away from his original idea - but is the end result really the tale he wants to tell? Kids will love listening along as Marc Brown reads this classic Arthur story.

The essential introduction to the principles and applications of feedback systems—now fully revised and expanded This textbook covers the mathematics needed to model, analyze, and design feedback systems. Now more user-friendly than ever, this revised and expanded edition of Feedback Systems is a one-volume resource for students and researchers in mathematics and engineering. It has applications across a range of disciplines that utilize feedback in physical, biological, information, and economic systems. Karl Åström and Richard Murray use techniques from physics, computer science, and operations research to introduce control-oriented modeling. They begin with state space tools for analysis and design, including stability of solutions, Lyapunov functions, reachability, state feedback observability, and estimators. The matrix exponential plays a central role in the analysis of linear control systems, allowing a concise development of many of the key concepts for this class of models. Åström and Murray then develop and explain tools in the frequency domain, including transfer functions, Nyquist analysis, PID control, frequency domain design, and robustness. Features a new chapter on design principles and tools, illustrating the types of problems that can be solved using feedback Includes a new chapter on fundamental limits and new material on the Routh-Hurwitz criterion and root locus plots Provides exercises at the end of every chapter Comes with an electronic solutions manual An ideal textbook for undergraduate and graduate students Indispensable for researchers seeking a self-contained resource on control theory

D.W. bosses her brother Arthur into carrying her on his shoulders at the beach because she maintains that she hates the water, until she gets a big wet surprise.