ShillerMath

ShillerMath is Larry Shiller's attempt to bring genuine Montessori math pedagogy into a scripted homeschool format. The kits include real Montessori manipulatives; the lessons are written so a parent without Montessori training can teach them.

Last updated: 2026-04-24 · Every Homeschool Editorial Team

At a glance

Method	Subject specialist (math) / Montessori-inspired
Worldview	Secular
Grades	Pre-K through pre-algebra
Formats	Hands-on manipulative kits, scripted print lessons, optional digital
Cost tier	Premium
Parent intensity	3
ESA-common	Yes
Accredited	No
Established	Late 1990s (founder Larry Shiller)
Website	shillerlearning.com

Our scoreboard (1-5)

Criterion	Score	One-line reason
Academic rigor	4	Strong conceptual foundations through pre-algebra
Ease of teaching	4	Scripts allow non-Montessori parents to teach the method
Content quality	4	Real Montessori manipulatives in a homeschool wrapper
Flexibility	4	Diagnostic-driven placement; pace is the child's
Value for money	3	High up-front kit cost; very low per-year cost over time
Worldview scope	5	Secular, used across all worldviews
Visual/design	3	Functional rather than polished; the manipulatives are the design
Support resources	4	Diagnostic tests, audio songs, customer service

Who the publisher is

ShillerMath was developed by Larry Shiller, a Harvard-trained software engineer turned math educator who became persuaded, through observation of his own children and a deep dive into Maria Montessori's pedagogical writings, that Montessori's mathematics pedagogy was substantively superior to what most American children encountered in traditional textbooks. The challenge, in Shiller's view, was that Montessori math required either Montessori training or a Montessori school, which made it inaccessible to homeschool families. ShillerMath is his answer: real Montessori manipulatives (bead bars, the golden-bead decimal system, the stamp game, color-coded fraction circles), packaged in kits with scripted lesson plans so a parent without Montessori certification can run the method at home.

The company, ShillerLearning, is small and family-run. Distribution is direct through shillerlearning.com and through major homeschool retailers including Rainbow Resource Center and Christianbook.com. ShillerMath operates from a modest catalog: Kit 1 covers Pre-K through Grade 3, Kit 2 covers Grades 4 through 8, and a Pre-Algebra kit extends the sequence; supplementary materials include diagnostic tests, song CDs (yes, songs), and printable lesson supplements.

Theologically the program is secular, there is no religious content in the lessons, no Bible verses in word problems, no worldview frame. It functions as a math program in the same secular register as Singapore Math, Saxon Math, or Beast Academy, and is used across worldview lines. Catholic, Christian-evangelical, secular, Jewish, and LDS families have all adopted ShillerMath without modification.

The core pedagogy

ShillerMath teaches mathematics the way Montessori taught it a hundred years ago: concretely first, then pictorially, then abstractly. A child learning addition does not start with the symbol "3 + 2 = 5"; she starts with three golden beads and two golden beads, physically combined to make five golden beads, while her hands move and her eyes see what the equation will eventually represent. The pictorial stage shows the same operation drawn on paper. Only after weeks of work in the concrete and pictorial stages does the symbolic equation appear. This concrete-pictorial-abstract progression is the methodological backbone, identical to the CPA approach made famous by Singapore Math but executed with Montessori manipulatives rather than bar models.

Scope and sequence runs through three kits. Kit 1 covers the entire elementary arithmetic sequence, counting, place value, four operations, fractions, decimals, money, time, geometry foundations, using the Montessori sequence. Kit 2 covers fractions in depth, decimals, percents, ratios, proportions, integers, algebraic thinking, and geometry. Pre-Algebra covers expressions, equations, and the conceptual bridge to formal algebra. Placement is diagnostic-driven rather than grade-based: every child takes a diagnostic test that places her at the appropriate lesson regardless of age. A six-year-old who tests strong begins where she is ready; a ten-year-old with gaps starts where she has gaps.

Signature mechanics: (1) Real Montessori manipulatives. ShillerMath kits include the actual Montessori-tradition manipulatives, bead bars, the golden-bead decimal system, color-coded fraction circles, geometric solids, the stamp game. These are not generic counters. The pedagogical design assumes the manipulatives will be used. (2) Scripted lessons. Every lesson is scripted so the parent reads aloud the prompts and demonstrations. This solves the largest barrier to home-implemented Montessori: parents who have not been Montessori-trained typically do not know how to introduce a concept correctly. The script does the work. (3) Diagnostic-driven placement. Children begin where the diagnostic places them, advance through mastery rather than calendar-based progression, and revisit weak areas through built-in review. This is closer to a mastery-based math program (Math-U-See, Beast Academy) than to a spiral program (Saxon, Abeka).

A day in the life

A second-grader using ShillerMath Kit 1 sits at the kitchen table with her parent, the kit's lesson book, and a small basket of manipulatives. Today's lesson is two-digit addition with regrouping. The parent reads from the script: "Take twenty-three golden beads, two ten-bars and three units. Now take fifteen, one ten-bar and five units. Combine them. What do you have?" The student counts: three ten-bars, eight units. The parent: "What does that represent?" The student: "Thirty-eight." The parent: "Now write it on your worksheet." Lesson continues with three more concrete examples, two pictorial examples (drawings of beads), and two symbolic problems. Total time: about thirty minutes including setup. The student finishes with the printable worksheet and is done with math for the day.

A family with multiple children typically rotates use of the manipulatives across siblings throughout the morning. Kit 1's box of manipulatives stores in roughly one cubic foot of shelf space; Kit 2 adds another set of materials for the older child. A multi-child family may have three children sharing one kit, with the parent shuttling between them.

What they do exceptionally well

Genuine Montessori math at home. Editorial view: ShillerMath is the most successful packaging of Montessori math pedagogy for homeschool families that exists. The manipulatives are real, the sequence is faithful to Montessori principles, and the scripted lessons let a parent execute the method without certification. Families who have visited Montessori schools and wanted to bring that math instruction home have, for twenty-plus years, ended up at ShillerMath.

Diagnostic placement that actually places. Many programs talk about placement; ShillerMath's diagnostics genuinely reveal where the child's understanding starts and stops. A six-year-old who tests at fourth-grade arithmetic concepts begins there. A ten-year-old who has been "doing" multiplication but does not actually understand place value gets placed where she actually is. This honesty is uncommon and valuable.

Long-term cost amortization for multi-child families. A Kit 1 is a substantial up-front purchase, but it is a one-time purchase that covers Pre-K through Grade 3 for as many children as the family has. A homeschool family with three or four children using ShillerMath sequentially is paying roughly $100 per child per year over the kit's life, competitive with workbook-based math programs, often cheaper.

What they do poorly

High up-front cost is real. Kit 1 retails at roughly $400 to $500 as of April 2026; Kit 2 retails at similar levels; the Pre-Algebra kit at roughly $200 to $300. Families budgeting for a single year cannot ignore this. The program is cost-effective over a child's K-8 math career, expensive over a single year. Families who are uncertain whether they will continue homeschooling should weigh this carefully.

Manipulative-handling time is a feature, not a bug, but it is real. Montessori math requires the parent to set up materials, supervise their use, and pack them away. Households unwilling or unable to commit to this rhythm, perhaps because of multiple young children, limited table space, or simply a preference for workbook simplicity, find the program harder to sustain than its scripts suggest. ShillerMath rewards methodical execution and punishes haphazard execution.

Songs as a love-it-or-leave-it feature. ShillerMath includes a substantial library of math-content songs (skip-counting, multiplication facts, fraction concepts) that some families find genuinely effective and others find insufferable. The program does not require the songs, but they are a noticeable part of the curriculum's identity. Families allergic to the convention should plan around them.

Who it fits / who it doesn't

• Pick ShillerMath if: the family is committed to multi-year homeschooling and can amortize the kit cost across years and children; the parent is willing to use manipulatives daily and read scripted lessons; the child responds well to concrete, hands-on instruction and to mastery-based pacing; the family wants Montessori pedagogy without Montessori-school enrollment; multiple children will use the program sequentially.

• Skip ShillerMath if: the family wants a low-cost workbook-based math program (consider Math-U-See or Singapore Math Primary Mathematics); the child is in upper-elementary or higher and has gaps that mastery-based pacing would slow further (consider Saxon Math for a spiral approach with built-in review); the family lacks the table space, time, or patience for daily manipulative work; the child is gifted in math and would benefit more from problem-solving challenge than from concrete representation (consider Beast Academy or Art of Problem Solving).

Cost honest assessment

ShillerMath Kit 1 retails at approximately $400 to $500 as of April 2026, with periodic publisher promotions reducing the price. Kit 2 is comparably priced. The Pre-Algebra kit runs $200 to $300. Per-child consumables (workbooks, additional diagnostic test booklets) add roughly $30 to $50 per year. Used kits are available through homeschool resale sites and the publisher's own used-materials pages.

Compared to Math-U-See (manipulatives-included Primer level kit at roughly $80 to $130 per level, with each level a separate purchase), ShillerMath has a higher up-front cost but covers a longer span per kit. Compared to Singapore Math Primary Mathematics (textbook-and-workbook at roughly $30 to $40 per semester, plus optional manipulative kits), ShillerMath is significantly more expensive at first but more comprehensive. Compared to Saxon Math (homeschool kit at roughly $90 to $130 per grade), ShillerMath is more expensive per child for one year but cheaper over multi-child use.

A realistic per-child cost averaged over Pre-K through Grade 8 with multi-child use: $100 to $200 per child per year. Single-child first-year cost: $400 to $500 plus consumables.

ESA eligibility notes

ShillerMath is approved on many state ESA marketplaces as a primary math curriculum. Arizona ESA, Florida Step Up For Students MyScholarShop, West Virginia Hope Scholarship, and several others include ShillerMath kits in their approved-vendor lists. The high per-kit cost works in ESA-funded families' favor, since the ESA can absorb the entire kit cost in a single year while the kit itself amortizes across multiple years. Confirm with the specific state ESA program before purchasing; secular math curricula generally face fewer ESA restrictions than religious materials, but vendor approval still requires confirmation.

Alternatives

• Math-U-See, a family would pick Math-U-See over ShillerMath for a similarly manipulative-based mastery approach with lower per-level cost, video instruction by Steve Demme, and a more familiar presentation to teachers raised on traditional American math.
• Singapore Math Primary Mathematics, a family would pick Singapore Math over ShillerMath for the strongest internationally validated elementary curriculum, with bar-model conceptual rigor at a fraction of the up-front cost, and acceptance of significant parental teaching effort.
• Beast Academy, a family would pick Beast Academy over ShillerMath for a math-strong gifted child who would benefit from genuine problem-solving challenge rather than concrete representation, in a comic-book-formatted curriculum from Art of Problem Solving.

How we verified this

Our editorial team reviewed shillerlearning.com, the kit-contents pages, the diagnostic-test sample, and the publisher's published scope-and-sequence documents in April 2026. We cross-referenced founder background and program history with the publisher's About page and Cathy Duffy Reviews' coverage of ShillerMath. Pricing for Kit 1, Kit 2, and Pre-Algebra verified April 2026 from the publisher's storefront.