As an adult with math-loving kids, I’ve had the nearly constant struggle of finding the “right math book” for them for many years.
Only after buying, renting, or borrowing some atrocious math books did I look into why different math books seemed “better”.
The answer, as in most things in life, is the power of incentives.
Writers of math textbooks face different incentives that drive the quality of exposition, exercises, exercise structure, and outcomes.
Once you understand how textbooks get made and who they’re designed for, it suddenly becomes much easier to choose one for your kid.
I. Why This Matters
When we started looking for math books for our kids, I had only really been exposed to the math books I used in K-12 and college. So I assumed all math textbooks were written the same way.
They aren’t.
After seeing the books my kids used in school and what I remember loving about math growing up, they were miles apart.
It seemed like some were written to take all the love and fun out of mathematics, while the others were written with love (even if it is a terse, make-you-do-hard-work, and this-is-good-for-you-even-if-it-is-painful type of love).
Why did I care, and why did this matter?
This matters because, as a parent of math-loving kids, I want my kids to see the love and wonder of doing mathematics.
After digging around, here is my hand-wavy answer to why some books are great and some are lacking: because two different systems are at play in producing math textbooks.
In broad strokes, the systems are:
College-level books (written by individuals)
K-12 books (written by committees and publishers)
Let’s first look at college-level books (and the like):
II. How College Math Textbooks Are Born
A math professor is assigned by the department (based on their seniority, interest, research focus, and so on) to teach a class.
This professor does a brief “literature review” of what textbooks would be good for the class.
This results in one or two textbooks that the professor will use.
However, every once in a while, the professor decides that the current textbooks are missing elements (exercises, topics, exposition) that would make the class even better.
So the professor creates their own notes to fit how they personally think math should be explained and learned.
This, of course, is unpaid work. But professors who write their own notes do it because they love the subject and want it taught the right way.
The professor then teaches the class for a year or two, and the notes evolve and get refined as the material is processed through teaching.
Other instructors discover the notes (TAs share them, grad students share them, math people are social and thus talk about what they’re teaching and how).
These other instructors (in the same and/or different institutions) ask to use the same notes.
Eventually, a publisher learns of the notes (they have scouts!) and approaches the professor and their institution to turn them into a book.
The book gets published, which results in a text with:
A clear intellectual point of view
Coherent sequence (because one person designed it)
Exercises that are very well thought out
Exercises that contain learning material “hidden” inside of them (which is why many mathematicians believe doing problems is where real learning happens)
As the book gets adopted, other professors and students find mistakes, and if it’s a good take on the subject, many new editions are printed.
Which is great until a new professor is assigned to teach a class somewhere and finds this book not to their liking.
So this other professor writes their own notes and, well, you can see where this will go.
Eventually, another book will be published!
All because someone cared enough about what was covered to sit down and write it.
Let’s now look at how the other system works.
III. How K-12 Math Textbooks (in the USA) Are Born
This is a very different origin story from college math textbooks.
I grew up in the USA and am most familiar with the USA, so that’s what will be covered here.
The first thing to know is that there is no single national math committee in the USA.
Which means that the curriculum taught in schools is developed by committees at the state and local levels.
Given there are 50 states and way more local levels, they don’t all align, given how different the states are.
As such, each state sets its own curricular standards of what must be taught at each grade level.
Most states have adopted the Common Core State Standards for Mathematics, which were developed to standardize mathematics education across the USA.
While well-meaning, the lack of a single national standard means each state wants something slightly different.
This means a state-level committee defines the topics and frameworks that must be covered at each grade-level class.
So while you can take High School Algebra I in every state, you’ll be learning slightly different things.
What this means for publishers, though, is that they have a choice between publishing 50 different textbooks for each subject or 1 (giant) textbook that covers all 50 states’ requirements.
They choose 1 giant textbook and then hire a team of educators and math writers to write a book that covers everything exactly as dictated by all the different curricula.
The goal here is to create a book that checks every box (because states will check) so that it can be sold in as many states as possible.
The book gets published, which results in a text with:
800-1200 pages
A mish-mash of topics that have somehow been connected
A text that meets bureaucratic requirements, not intellectual ones
A “kitchen sink” approach and design that dilutes the conceptual focus
Exercises that must adhere to the exact wording specified in the curriculum guide.
And not only that, the teachers in each state then have to teach from this!
Which means kids are jumping over topics for reasons they don’t understand.
All because the particular state they’re in doesn’t cover that topic, and because all the topics must be seen, the teachers rush through the book (through no fault of their own).
It’s not the teacher’s fault; it’s how the system is set up.
This gives students the impression that some topics are as “valuable” as other topics.
Let’s look at an example for a US high school calculus book.
IV. The Page Count Problem
I just used my favorite search engine to search for “high school calculus textbook”.
The first result led me to Amazon, where I saw that the recommended textbook has 1,176 pages.
That’s right, almost one thousand two hundred pages!
Compare that with the first calculus book Richard Feynman read (at the age of 13, no less) “Calculus for the Practical Man” by J.E. Thompson.
Calculus for the Practical Man clocks in at 360 pages.
A more recent example is Apostol’s Calculus I (Volume 1), a rigorous (i.e., proof-based) introduction to Calculus.
Even this book comes in at 666 pages. Though to be fair, the first two-thirds (pages 1 to 444) cover calculus of functions with one variable, including infinite series and an introduction to differential equations. The last third of Volume I introduces Linear Algebra with applications to Geometry and Analysis. If we’re comparing the Calculus book to the Calculus “book”, this book could count as 444 pages.
So why does an easier high school calculus book require 600 to 900 more pages than rigorous introductory university calculus textbooks?
Because the goal isn’t to teach calculus. The goal is to satisfy adoption committees.
Let’s look at why Committee-Written Textbooks are not suitable for math-loving kids.
V. Why Committee-Written Textbooks Feel So Different
The Committee-Written Textbooks (CWT) are written to get adopted by school districts, not to optimize learning.
CWT textbooks are risk-averse because they must match a state’s curriculum language exactly.
CWT textbooks don’t prioritize what matters and have to cover everything.
CWT textbooks are written so that other committees can do a check-box scan to make sure the content is there, so they end up with:
And lastly, and why we care the most, is that the books are designed around classroom management and not for highly motivated learners.
Getting back to choosing a textbook.
VI. What This Means for Parents Choosing a Textbook
The books designed for school constraints are rarely the ones that work best for a motivated young math kid.
This means that when learning math outside of school, you likely won’t want:
Bureaucracy-driven textbooks
“Kitchen sink” mega-books
Overly scaffolded, shallow introductions
What you should be looking for is a book written by:
A single mathematician
A small, unified team (editors, reviewers) that supports a clear philosophy
Someone with a clear pedagogical mission (e.g., Gelfand, Strang, Art of Problem Solving, etc.)
When in doubt, avoid mega-textbooks and look for clarity, brevity, and conceptual focus. Ideally, you can read the introduction and see the professor/writer thanking the many years of students who took the class based only on printouts/copies of the professor’s notes.
VII. Choose better
When learning at home with a math-loving kid, choose books written by people who clearly “give a damn.”
That is, people who looked around and thought to themselves, “This could be better,” and then went out and actually wrote it.
This gives you and your kid math books that teach thinking and offer a glimpse into how a professional mathematician thinks about math.
Oh, and if your kid’s book was written by someone who cares deeply about math, the exercises are where that care really shows.
VII. Closing
That’s all for today :) For more Kids Who Love Math treats, check out our archives.
Stay Mathy!
Talk soon,
Sebastian
PS. Have questions about the above and our experiences? Hit reply or comment below.