Richard E. Pattis is a senior lecturer at the University of California, Irvine's Donald Bren School of Information and Computer Sciences. He is the author of the Karel programming language. Jim Roberts is the author of Karel The Robot: A Gentle Introduction to the Art of Programming, 2nd Edition, published by Wiley.

• Chapter 1. The Robot World 1 1.1. Karel's World 11.2. Karel's Capabilities 31.3. Tasks and Situations 41.4. Problem Set 6Chapter 2. Primitive Instructions and Simple Programs 72.1. Changing Position 72.2. Handling Beepers 92.3. Finishing a Task 92.4. A Complete Program 102.5. Error Shutoffs 132.6. Programming Errors 142.7. Problem Set 19Chapter 3. Extending Karel's Vocabulary 253.1. Creating a More Natural Programming Language 253.2. A Mechanism That Defines New Instructions 263.3. Block Structuring 273.4. The Meaning and Correctness of New Instructions 283.5. Defining New Instructions in a Program 293.6. Boxing: How Karel Understands a Program 323.7. An Ungrammatical Program 343.8. Tools for Designing and Writing Karel Programs 353.9. Advantages of Using New Instructions 533.10. Writing Understandable Programs 573.11. Problem Set 59Chapter 4. Conditionally Executing Instructions 654.1. The IF/THEN Instruction 654.2. The Conditions Karel Can Test 664.3. Simple Examples of the IF/THEN Instruction 674.4. The IF/THEN/ELSE Instruction 744.5. Nested IF Instructions 764.6. More Complex Tests 794.7. When to Use an IF Instruction 804.8. Transformations for Simplifying IF Instructions 814.9. The Dangling ELSE 844.10. Problem Set 87Chapter 5. Instructions That Repeat 935.1. The ITERATE Instruction 935.2. The WHILE Instruction 955.3. Errors to Avoid with WHILE Loops 1005.4. Nested WHILE Loops 1045.5. WHILE and IF Instructions 1125.6. Reasoning About Loops 1125.7. A Large Program Written by Stepwise Refinement 1165.8. When to Use a Repeating Instruction 1265.9. Problem Set 128Chapter 6. Advanced Techniques for Karel 1416.1. Recursion 1416.2. Searching 1456.3. Doing Arithmetic 1496.4. Problem Set 152Appendix 155Technical Term Index 157Instruction Index 159