Don's materials (7 items)
Has Don's worksheet book been in your basement for the past two
years, unused? As a parent or teacher do you have trouble understanding where
Don is going?
Don's support in using his materials
21 August 2012 "Hi Don,
14 February
2006
I receive the DVD yesterday. Thank you. I am a high school math teacher and will be teaching calculus this fall. I was searching for materials and I find your material through this linkhttp://www.awesomelibrary.org/Classroom/Mathematics/Middle-High_School_Math/Calculus.html
I look through some of the problems in your book and it emphasizes
critical thinking skills.
It also presented them in a way that students or kids will not be overwhelmed with the math symbols and language.
Thanks for putting up lot of examples of hands on activity on your website. I will probably look through those for ideas too.
Enjoy your summer with your family
Xu"
On 13 January, 2006, a CD-ROM with his book "Calculus By and For Young People-Worksheets" (below), and its package, was completed and sent out to people who ordered it!
On 22 March 2006, Don decided to put all his materials on 1 or 2 CD's!!
10 December 2005 - 2 February 2006 The story of Don's CD:
Rainbow Resource Center is one of Don's fine distributors, for homeschooling families and schools. They asked Don if they could put his CD-ROM with his book "Calculus By and For Young People-Worksheets" and his poster-flowchart "A Map to Calculus"- in addition to his three books and two videotapes- into their new extensive catalog for 2006-2007. Of course he was delighted to do this. Don didn't have a nice package for the CD and needed an ISBN for it and the Map and bar codes for these and his "Changing Shapes With Matrices".
For the disc, the ISBN is 0962167479, and for his "A Map to Calculus" the ISBN is 0962167487. Don also had bar codes made for these and his book "Changing Shapes With Matrices" as well. (He also has the new global 13- digit ISBN for all his materials, needed by 1 January 2007). He will now be able to sell all his materials at Rainbow Resource Center (online and from their catalog), amazon.com , half.com and Baker & Taylor. See where his Japanese and English books are being sold around the world. It's all very exciting!
Knowing that Don would be phasing out the paperback version of his worksheet book, on 2 February, 2006 Rainbow Resource Center ordered 100 of Don's worksheet books, some CD's and some Maps!
The reason Don is phasing out the paperback version of his worksheet book (unless he gets a grant to print more), is due to high printing costs, the big discount he has to give amazon.com, plus shipping costs to them. Rainbow Resource Center has the 45, amazon has some, and Don has none left.
"Hi Don,
My son is 7 and in 2nd grade. He understands basic algebra, ratios/percentages and adding/subtracting fractions but your approach seemed much more direct and visual than mine has been so far. I googled basic calculus and found your site. My son and I enjoyed the practice problems available there. I'm just an amateur mathematician, but enjoy it a lot. I look forward to using your material with my daughters as well in a few years. They are 4 and 7 months. Thanks much for making math as simple as it can be!"
11 November 2005 James N. ordered Don's "A Map To Calculus" poster-flowchart. Don asked if he had his calculus books. He responded: "Yes, I have your other books and have been successfully teaching their "calculus" ideas this year to students ranging in ages 13-18". (In WA state).
12 June 2005 Don received this email from Japan: "Dear Don, Thank you for your rapid response. I will briefly introduce myself to you. I am a medical doctor, specialized in oncology. The Mathman website let me know your activity. And of course I have already read your two textbooks in Japanese. My child is 6 year old girl who is now learning at some international school.. She can speak both Japanese and English ..but she is neither a math-genius nor specially interested in numbers. She likes Disney Princesses very much. Anyway, I am very interested in your worksheet book because I hope to introduce mathematics to her through your Mathman strategy. I wish if she would participate at your homeschool during summer holidays in near future.- T.R., MD. from Japan (he purchased Don's worksheet book).
8 April 2005: Don received this email after Laura ordered Don's videotape #1.
Hi Don,
Yes, we do have your books, and think they're wonderful. I have two boys who
love math, and we're
looking forward to the videotape.
On 15 April 2005 Don received an order from Singapore for all 7 of his items. Three weeks later he received an email from The U of Singapore Bookstore inquiring about the prices of his books!
2 April 2005
: Don received this email:
Hi Don,
My children and I (
Could you please tell me if there are any tutors in Florida, specifically Cape Coral/Ft. Myers/Naples
that use your materials and methods.Thank you
Don talked on the phone with Dr. Temple
on 14 January . She is using Don's books to show teachers how to raise expectations of their students. She was excited about the possibility that Don would work with her class sometime via instant messenger and his webcam.Dr. Temple really read Don's worksheet book carefully, because she found the appendix in which Don gives problems for a Parent-Teacher workshop. She plans to do just that next summer.
Thank you Dr. Temple!
17 January 2005
In an email from Dr. Temple: ''Don, Thank you for writing the books. I have looked at curriculum materials through the years and I get excited when I find something that I know will raise students' and teachers' expectations'.11 October 2004
Don received an order for his books and Map from Hoover Liddell in San Francisco. He will be using Don's books with some 5th graders in an inner city school. He describes his earlier work using Don's materials in chapter 35 of his wonderful book "Journey from Kilimanjaro" .5 September 2004 Don received this email: 'Dear Don, I have a 7 year old son, and I've been teaching him math on the weekends since he was 5. I've also been volunteering at my son's school for the past 3 years, teaching advanced math to elementary school students. I had never been able to find any math materials that taught math as I see math, and therefore I felt that I had no choice but to invent all my own materials. A week ago I got your book and I haven't put it down yet. It's so beautiful! I can't wait to try out the worksheets at my son's school'.-- M., Assistant Professor, Dept. of Computer Science (M. found out about Don from a friend who has been using Don's worksheet book with her own 8 year old son).
8 October 2004
Don received this email: "Hi Don, Just wanted to say that I really enjoyed my meeting with you. It really inspired me. I've been telling my friends here about your math room. We're going to incorporate your worksheets into our weekly after-school math club for kids. Hope we get to meet again. M. " [She came for a conference at UI].30 July 2004
See a new page: Katy's discoveries about INFINITE SERIESWe are a literary & rights agency in
Best wishes,
J.K.
-Managing Director"
26 April 2004: Don
received an order for his book "Changing Shapes With Matrices" and his
"A Map to Calculus" , from Hugo in
Belgium!
2 April 2004:
Don found reference to his materials and website, in the book
"Teaching Mathematics to Able Children"
by Valsa Koshy ,
and
in the book
"Early
Gifts: Recognizing and Nurturing Children's Talents"
by Paula Olszewski-Kubilius, et al.,
and in the book "Fundamentals
of Homeschooling: Notes on Successful Family Living"
by Ann Lahrson-Fisher.
11 February 2004:
Don received an order for a worksheet book from New Delhi,
India!
' "Calculus By and For Young People-Worksheets";
Suitable for age 7 and above and not just for the gifted. Hands-on explorations discover many concepts foundational to calculus. Don Cohen explores maths as an art and teaches techniques of discovery that improve ability to solve everyday problems. There is much crossover with science exploring the orderly design evident in creation e.g. pineapple leaves, chambered nautilus. Follow up questions take you beyond the immediate discovery. Suitable for questioning minds of all ages. Use at any time before doing calculus on a regular maths course since it teaches the concepts behind the numbers far better than traditional text books. Try sample problems from each chapter at Don's website www.mathman.biz/ '.- Thank you Sandra and David Bird !!On 4 November, Christina from Seattle, sent this email: "Dear Don, I am enjoying your materials very much. I am intrigued that some of your materials have been translated into Spanish [see above-Argentina]. This is wonderful. I am teaching a group of bilingual (native Spanish AND English speakers) teachers a calculus "romp" at this week. I would so much enjoy being able to tempt them with some materials in Spanish.
Is there any chance you can
e-mail me the materials which have been translated? That would be so helpful.
I would be happy to pay, of course, and give all the credit where it's due.
I will try to send you an
account of the three-day workshop when I return!"
From
the 2003 Rainbow Resources Website:
"I want my children to understand
that there's more to math than arithmetic, and that math is truly an art, not
just a 'get the right answer, please' subject. For much of math is not
coming up with one, correct answer; it is conceptual and interesting! However,
what a child attains in the way of mathematical understanding is directly
related to our expectations of what he can achieve. And the typical math
curriculum for younger children reveals much about our expectations. In fact,
when Don Cohen presents his program as appropriate for ages seven and up (yes,
seven and up), your initial reaction may be that it's just for the gifted. Not
so! Mark, at age seven, is ready for most of the concepts explored. In fact, the
videotapes are aimed at 6- to 11-year olds. Don's admonition to 'start
important math early' is well-grounded in his own experience with young
children, and advice we should consider. Young children are naturally fascinated
by the 'art' part of math. Iteration and infinite sequences, key concepts in
calculus, are delightful to contemplate for a naturally curious six-year-old.
Take this beginning example: start with a square, and keep filling in half of
the remaining portion (Don supplies a nice gridded square in the Worksheets to
illustrate this). Each time, cut the remaining section in half. You get smaller
and smaller 'leftovers', but you never fill it all in! Mark found this
fascinating, and had no trouble understanding the concept. I found the whole
idea behind Don's books and videos intriguing; concepts are presented in an
understandable and thought-provoking way, encouraging the student to use
hands-on exploration to 'discover' many concepts foundational to calculus.
It reminded me somewhat of Miquon, only with more involvement by the reader, and
is well suited to questioning minds of all ages. The heart of the course is a
small, wire-bound 'text', very brief and clear. Most of this material is
repeated, in more usable format for the investigator, in the thick Worksheets
book (it is not necessary to purchase both). Print is large, making it more
accessible to the young reader, and pages are uncluttered. Don truly has a knack
for presenting these ideas and explorations in a way that children quickly
become caught up and actively involved in deducing the principles he's leading
them to uncover. He teaches techniques of discovery that will improve their
ability to solve problems everyday, and not just in the area of math. In fact,
several of the explorations include more than a bit of science, as orderly
design is evident in creation. The chambered nautilus is studied, as are
pineapple leaves, sunflower stalks, light reflection, and a ratio of surface
area to volume of rods that leads to a discovery of why rats are nocturnal
animals! I got absorbed in the book immediately, pondering his follow-up
questions that take you past the immediate discovery, into uncharted waters!
Calculus By and For Young People is empowering for anyone who has natural
curiosity! As far as implementation, I would suggest using this course here and
there throughout elementary ages (perhaps during summer months), and certainly
before your student reaches calculus as a regular math course because it teaches
the concepts behind the numbers so much better than traditional calculus books.
Anyone who can read can be set loose with the Worksheets with no adult
intervention; younger children can benefit from the videos. The Infinite Series
video parallels chapter 1 in the text and would be a helpful for the teacher who
is not confident about this type of math instruction. The Iteration to Infinite
Sequences video parallels chapter 8. (Don, the 'Mathman', also teaches
workshops using his methods, and has a 'Math by Mail/Email' program.)"
Constructing Calculus Concepts-a Method
for all Ages, January 27, 1997 from the amazon.com site.Sure, your children are doing great in elementary school, and that's probably due to the time you have taken to work with them...to prepare them for school. But do you ever wonder what will happen to that success later on when the concepts get tougher--like when they study calculus?
Your children CAN be ready for calculus--and Don Cohen's book, written for young people by young people, will prepare them. "Calculus By and for Young People" will empower your children to construct the conceptual associations necessary to understand calculus. It is as simple as that!
A specialist in Instructional Design and Psychology and a veteran, myself, of calculus training at Iowa State University of Science and Technology, I have used Don's book with learners age 8 through 72 (you are never too old) for three years now. Don's stuff is EXCITING! I give his books as Christmas presents to my favorite nieces and nephews. I take copies of the book on trips, and PLAY at math with the children at the homes I visit.
With Don as a guide and mentor, I love to play with mathematics. I have seen my students jump up in the air with glee when they solve one of Don't challenges--or giggle as they work at an assignment. I have a video tape of my students at work with Cohen's materials. Watching it always amazes me. This is education at its best.
Don Cohen and you. What a team, working together to help your children reach their potential in tomorrow's world.
P.S. Don't think this book is kid-stuff. Your high school student, or college student will benefit from Don's training as much as your younger child. Don't be surprised when your son or daughter confides: "I've been working on this calculus stuff all year, and getting A's, but I never really understood what it all meant, or what I was doing, until I worked through this book. Gee, thanks for helping me out."
July 12, 2002
- (in response to an earlier
inquiry about the use of calculators) ' Hi Don.
Thank you for the information on the calculators, and computer programs.
I first came upon your materials while looking through
a Rainbow Resource catalog - the catalog had quite a good write-up on your
materials. From there I did a search for "Don the Mathman"
:o) on the internet to find out more about the calculus series.
Your internet site was what made me decide yes to the purchase. I
really like your gentle attitude about it being OK to make some mistakes and on
your video tape (we have only watched the first one) your love of your subject
is infectious - I don't think that my children had ever considered math to be
something you do because you like it (shame on their mother-me), but just
something you do until you get it right so you can go on to something that you
actually enjoy. I just put the first
video in to get a feel for what it was about, without inviting anyone to join me
and before long three of the younger kids (4, 7, 10) were watching with me
(Isaiah - 4 had the construction paper out drawing shapes and filling them in.
Simeon - 7 was doing something about cutting his squares out. (I haven't yet
gotten our graph paper out).
We homeschool (for the most part - they take music and
occasional other classes at the public school) our children whose ages are 2, 4,
7, 10, 13, 15, and 17 (we also have one grown).
You are welcome
to quote anything I said in my email.
Thank-you, also, for your offer of help. It would
be a delight to talk to you in person! :o) I will keep all of
your "help" options in mind and am planning to spend some
"quality time" on your website before we jump with both feet
into the Calculus book.
Thanks again. Sincerely, ..' S. C., in Missouri
January 27, 2002 email:
Dear
Mr. Cohen, I
found you on the web when I was looking for math material for young children
that would go beyond the usual tiresome 2+2. My daughter is 6. We did 2 of the sample pages. I
like your approach about finding out rules and ways of solutions by yourself.
Even though I hadn't been bad at math at school myself, I didn't find doing
these boring. On the contrary. It looks like I gained some insight whereas
school was more a formal usage of given ways of solutions.
My
daughter loves math puzzles, which is why she liked to find first the secret
numbers for the quadratic equations and then the secret on how to determine the
numbers without guessing with me. Being only six she does need some guidance,
though, to stay on track. Simple things like where to write the next equation
and where to keep some space to preserve clarity and overview. But it was fun
for both of us, not a chore at all. ' Dr. G (UK)
From Japan about Don's original book, in Japanese: "Thanks for giving such a beautiful thing to the world"- Yashu Xuan
On
January 15, 2002, Don received this email: "Dear
Don: Your materials are being used by a parent in our school to work with our
GATE students. The kids are loving it!!" -BC,
principal of a K-4 public school in
CA,
who had purchased 2 sets of Don's materials in Nov.
2001. See the teaching parent's letter
to the other parents and students on Jan 23,
2002.and his update on Feb.
14, 2002 including two more classes!
7/6/01:
Pam in Iowa,
asked about The Math By Mail/Email program, and told Don on the phone:
"Videotape #1 was really helpful in doing the infinite series. My two boys
and I followed along, stopped the tape when you told us to, then went on by
ourselves. It helped the boys and encouraged them to stay with it. Thank
you".
6/28/01
'Dear Don, My
husband was quite impressed by your book "Calculus by and for Young People
(Age 7, Yes 7 and Up)," which was translated into Japanese. He found
your website address there. We have a soon 9-year old daughter and 6-year
old son. Our daughter was born in Pennsylvania, and she will be a 4th
grader in an international school from Fall. Her studies are in English, so
we thought an English workbook should be useful. Our son attends a local
kindergarten (he starts elementary school next
spring). We
feel he enjoys and understands numbers fairly well. Our aim is to
introduce concepts in math in an enjoyable way, so that they see math in
everyday life, or in a way that they can relate to easily. Besides, I feel
there is a lot of fun in solving problems together, regardless of age. '- Mari
in Yokahama, Japan,
upon ordering Don's book and worksheet book in English.
December, 18, 2000
Robyn is the mother of a 7 year old boy Ryan.
After purchasing all of Don's materials, she started using it, doing math at
Ryan's school, with a group of seven 1st-3rd graders, one day a week, for 75
minutes.
November 2000
October, 2000
'Your
math books have changed the way we approach and think about math. My eldest
daughter (16) is taking advanced calculus 12 and advanced physics 12 this year
and is really enjoying herself. She read through your books and kept
saying, 'Yes, this is right! This makes so much sense. Why can't
schools teach it this way?' She uses your methods to help others understand
math and is highly sought after, recommended, and praised for her tutoring
abilities by both students and teachers". --Jean
Lau, Don's Canadian distributor-
"..What Brad just
discovered [in his cookie-sharing from Chapter 2], explains Don Cohen- a.k.a.
The Mathman, and author of this absorbing little book- is an infinite series.
From just such simple investigative beginnings, Cohen shepherds young (and
older) learners into the beauties and complexities of higher mathematics. Using
models, projects, puzzles, pictures, calculators, and self-written computer
programs, kids explore many of the classic problems of mathematics- how did
Archimedes figure out the area enclosed by a curve?- and discover the principles
of functions, integrals, slopes and derivatives, the secrets of the snowflake
curves, and the fascinations of the Fibonacci numbers. The book itself is tiny-
spiral bound, 3 3/4x5" - but the concepts it encloses are immense. There's
an accompanying (and much larger) Worksheets book with [questions leading to the
concepts], additional problem suggestions, examples, and [student ]
illustrations, plus reproducible graph papers and a detailed bibliography.
.."-- from the review of Don's books by Becky Rupp in the
July/August
Mary Pride in her new '99
issue of 'The Big Book of Home Learning' had this to
say about Don's materials:"..And that's what this series is about. Playing
with interesting aspects of math- the Fibonacci sequence, for example- and
learning to think mathematically. None of these materials offer a step-by-step
instructional sequence, like a regular math course. Instead, these are explorations
in math, a veritable hands-on museum of activities for young children in areas
where high-school students fear to tread."
"We've started using Don Cohen's "Calculus By and For
Young People (ages 7, yes 7 and up)" with our 8 year old and he loves
it." -- Beth C. in Australia
July
2, 1998- "I have been telling myself for years
that I was going to teach myself calculus. I knew that it would have to be put
in simple terms. I looked at the libraries, book stores and colleges for some
kind of workbook that would enable me to teach myself. One year, I bought "Schaum's
Beginner's Calculus" that included Don's brochure. I thought WOW! NEAT! I
needed to preview the book, though. Eventually after getting on the internet I
came across Don's web page. He had sample problems from each chapter on his web
sight. As I looked at each problem I thought, "Anyone can do this!" I
was sold. I got the book and went through it in about 2 weeks. Now I am enrolled
in a correspondence calculus course and my grade is 96%! Don's book helped me
understand the CONCEPTS better that any other workbook I have purchased. I also
gave the problems to my young relatives , the neighbor kids, any kid I can get
my hands on. They just love doing them. This book is great for people of all
ages. All the people who went through life afraid of math will be cured when
they go through Don's worksheet book. It's a must have."
Lori Johnson Morse, teacher, Kansas City, MO
Don's book was reviewed in
FACHINFORMATIONSZENTRUM
"..In summary: when Beth (age 8) received your little book, she didn't want
to go to bed that night. When your Worksheets arrived, she didn't want to go to
school either! It's hard for plain old school to compete with the intellectual
excitement of your ideas. Your approach to helping children build their own
understanding of mathematics will profoundly affect their lives. Cheers."--Meg
Bennett, Meg Bennett's Almanac, 2255 Algonquin Rd., Niskayuna, NY 12309 (Meg is now homeschooling Beth) "Dear Don, I have been using your "Calculus By and For
Young People" for two years, and I love it. I was able to convince my
Gifted and Talented Education committee to adopt the program as a semi-official
program for our small district. CB&FYP works equally well for children who
prefer to work along and equally well for co-operative learning... Given the
appalling state of general math education in the country, your book is a bright
candle in the darkness." --
KARLSRUHE No. 5/90 in Germany.
To
see all of Meg Bennett's letter about 'worksheets'
".. Much lip service is given to education as it ought to be. Your
materials guide us to education at its best. It's always exciting and rewarding
to work with your materials." -- Debbie Reese, former TAG teacher,
grades 6-8, IA (Debbie and her students found 3
mistakes in Don's worksheet book! Needless to say, she and her students have
really worked hard and carefully in the worksheet book.)
"..We are certainly enjoying your Calculus book and worksheets. We agree:
"This book is not a 1 year course!" Thank you for the joy and light
which permeate these books." -- K.
T. C., RI, who with his wife, homeschool their 11, 9, and 7 year old
children
"..Cohen shows us clear, easy-to-follow steps how some of his students have
tackled problems such as sharing 6 cookies evenly with 7 people, which leads to
a discussion of infinite series and alternative methods of problem-solving..Cohen's
approach to his subject seems likely to defuse the fears of the most
calculus-phobic person willing to stick with him. Impressive!"--reviewed by
Bruce Kodisch in the September 1993 issue of
The Institute of General Semantics
Newsletter
"..On my first toe dipping into your hand book (child size), chapter 1
Infinite Series and skipping for a quick look at what integral calculus is
about, how 'on looking into Chapman's Homer' it all is - how aesthetically
pleasing it all is. The beauty of the obvious, once you have been shown!-- Dr.
M. Greenberg ,
England"
"..But the main attractiveness (of Don's book) is due to an
explicit philosophy that children are capable of behaving as mathematicians.
..Somehow we reach an almost formal treatment of integration and differentiation
without an integral sign or a dy/dx. But on the way we have been presented with
a variety of very accessible problems. .." --reviewed by David Fielker in the
Sept. '92
Mathematics Teaching (England)
"..many fresh and revealing insights..a very handy
resource.." -- July
'93
Undergraduate Mathematics Education Trends,
a
newsletter of the MAA and AMS
"I was an A students in calculus, but after seeing the work of
Don Cohen and his students, I am finally beginning to understand infinite
series. This style of work should be part of all calculus courses".--Kevin Kopchynski,
mathematics teacher, elementary -
high school, Wilbraham, MA.
"I really loved your book! It gave me lots of ideas how to make calculus
more fun for my students, and how to relate the excitement of Mathematics to my
own children.."--Doron
Zeilberger,
mathematics professor, Drexel University.
"..packed with many problems that can be used in almost any
classroom.." -- Leonard
Yutkins,
Oct.'89,
Mathematics Teacher
(NCTM)
"..Cohen believes strongly in learning mathematics, not by
memorizing formulas and notation, but by truly understanding and enjoying
it.." --Oct. 89
Educational Leadership
(ASCD)
"..I think it will slowly become as popular as it deserves and
I hope that it will help many innocent victims of Bourbarki to recover their
mental balance.." -- Manuel
Ojanguren, Institut de Mathematiques, Universite de
Lausanne,
Switzerland
"..intriguing little book..The
author has a delightful attitude about teaching and learning.."--review in
May-June'89
issue of
Home Education
Magazine.
"I am glad you are emphasizing that young children can do
maths." -- W.
W. Sawyer, author and mathematics teacher, Cambridge, England.
"..stimulating little book..you are to be congratulated for
your daring.." --
Morris Kline, author and mathematics teacher, NYU.
"..very well done.."--Martin Gardner, author and former writer of
Mathematical Recreations articles in Scientific American
"This book raises questions for all educators concerning the
extent to which students in elementary school should be introduced to problems
involving limits of infinite sequences and series.. Cohen's book is puzzling,
troubling, provoking, but interesting. Read it."-- Raymond E. Spaulding, in the May '89 Arithmetic
Teacher (NCTM)
About
Don's Videotapes:
"What to conventional
wisdom appears either impossible or unlikely, this tape and my class's
experiences with it, demonstrate that the main concepts presented here are not
only possible with young children but fun, engaging and eminently practical. The
tape (VT #1) integrates a wide spectrum of math concepts with critical thinking
to solve really important math problems. Don uses concrete examples to help
children find patterns in the process". --Douglas Elrick, 4th-5th
grade teacher, and father of three of Don's former
students.
"..seldom do I see students so excited about their discoveries and sharing
their methods..What's more exciting, they want to get a hold of some little kids
and try it out on theme.."--Bruce
Hamilton, HS math teacher, Colorado Springs School, CO
(One of Bruce's student has their discovery in Don's worksheet book).
"The Cohen videotape on infinite series is an excellent inservice for
teachers. The tape demonstrates how to engage children's minds and shows
alternate ways to study mathematics other than workbook
fill-in-the-blanks".--
"..Especially appealing is your non-threatening approach where analytical
concepts, such as geometrical series, are made visually understandable to young
children in terms of what they can grasp.. Congratulations on an excellent
achievement. I can strongly recommend and endorse this educational tool to all
ages. Even my university level students could benefit from an exposure to your
concepts".--
"If you've never had algebra, this half hour tape (VT#2) will teach you the
basics of functions and iteration. It will show you how to do iteration by hand
or with a calculator. You'll see that even children of ages 6 and 7 can solve
iteration problems". --John
Zarella,