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<TITLE>Computer Science Logo Style vol 1:Acknowledgments</TITLE>
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<CITE>Computer Science Logo Style</CITE> volume 1:
<CITE>Symbolic Computing</CITE> 2/e Copyright (C) 1997 MIT
<H1>Acknowledgments</H1>
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<TR><TD align="right"><CITE><A HREF="http://www.cs.berkeley.edu/~bh/">Brian
Harvey</A><BR>University of California, Berkeley</CITE>
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<P>
The people who read and commented on early drafts of this book include
Hal Abelson, Sharon Yoder,
Michael Clancy, Jim Davis, Batya Friedman,
Paul Goldenberg, Tessa Harvey,
Phil Lewis, Margaret Minsky, and
Cynthia Solomon. I am especially grateful to Paul
Goldenberg and Cindy Carter for their professional, financial, and
emotional support during the months I spent as a guest in their home
while working on this project, keeping them from their own work and
tying up Paul's computer equipment. This book wouldn't exist without
them. Special mention also goes to Hal Abelson, without whose support this
book wouldn't have found a publisher.
<P>The main ideas in this book, and some of the specific examples, first
surfaced in the form of self-paced curriculum units for a programming
class at the Lincoln-Sudbury Regional High School, in Sudbury,
Massachusetts. Alison Birch, Larry Davidson,
and Phil Lewis were my
colleagues there. (So, later, was Paul.) All of them helped debug the
curriculum by finding mistakes and by pointing out
the parts that were correct but incomprehensible. Larry, especially,
was my mentor and untiring collaborator, helping me survive my first
real teaching job, even though he had his own work and wasn't
officially part of the computer department at all. I'm also grateful
to the many students who served as guinea pigs for the curriculum, and
to David Levington, then the
district superintendent, who was generous
with equipment and with administrative freedom in support of an
untested idea.
<P>My work at Lincoln-Sudbury would not have been possible without the
strong support of computer scientists at the Massachusetts Institute
of Technology, especially but not only the ones at the Logo Laboratory.
Equipment grants from the Digital Equipment Corporation and from
Atari, Inc., were also crucial to this work.
<P>And thanks, also, to my faculty supervisors in the Graduate Group in
Science and Mathematics Education, at the University of California at
Berkeley, for their patience and understanding while I worked
on this instead of my thesis.
<P><H2>Second Edition</H2>
<P>In 1992 one of my then-undergraduate students,
<A HREF="http://www.cnmat.berkeley.edu/~matt">Matt Wright</A>, suggested that
we collaborate on a textbook for Berkeley's introductory programming course
for non-majors. The book would use Scheme, the same language used in our
first course for students in the computer science major, but would be based
on the ideas in the first edition of this book. The result of that
collaboration, <EM><A HREF="../simply-toc">Simply Scheme</A>,</EM> was
published in 1994.
<P>In writing <EM>Simply Scheme,</EM> Matt and I reconsidered every detail of
the presentation used in <EM>Computer Science Logo Style.</EM> We added a
greater emphasis on higher order functions, and we completely reorganized
the chapters on recursion. Large example programs were added to the text,
along with suggestions for student projects.
<P>Most of the changes in this second edition were inspired by the work that
Matt and I did together for the Scheme book. In a few cases I have lifted
entire paragraphs from it! Matt also read early drafts of some of the new
chapters in this edition, and this text benefits from his comments.
<P>Berkeley Logo, the interpreter used in this edition, is a collective effort
of many people, both at Berkeley and across the Internet. My main debt in
that project is to three former students: Dan van Blerkom,
Michael Katz, and Doug Orleans.
At the risk of missing someone, I also want to acknowledge
substantial contributions by Freeman Deutsch,
Khang Dao, Fred Gilham, Yehuda Katz,
George Mills, Sanford Owings,
and Randy Sargent.
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