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Free homeschool math curricula, compared

3 programs, listed alphabetically, each with its grades, method, format and cost a year as the publisher’s own site showed them on October 31, 2026. Open a card for the strengths, the watch-outs and who it fits.

What this list holds

Free programs cost nothing to use. Some sell printed books or extras, and some take donations.

Math programs differ most in who does the teaching (the parent from a guide, a video, or the book written to the child), in whether a topic is finished before the next starts or keeps coming back in review, and in where the series ends.

This list holds programs sold for math on their own. Full curricula that teach it along with every other subject are on homeschool all-in-one curricula.

At a glance

  • All 3 show a price on the publisher's site. For one child and one year of the main package they run free.
  • How the child works: 3 on screen.
  • Grades: all reach pre-K or kindergarten, all reach the elementary grades, all reach middle school and 2 reach high school.

Grades each program covers

CK-12
  1. PK
  2. K
  3. 1
  4. 2
  5. 3
  6. 4
  7. 5
  8. 6
  9. 7
  10. 8
  11. 9
  12. 10
  13. 11
  14. 12
Khan Academy
  1. PK
  2. K
  3. 1
  4. 2
  5. 3
  6. 4
  7. 5
  8. 6
  9. 7
  10. 8
  11. 9
  12. 10
  13. 11
  14. 12
Zearn Math
  1. PK
  2. K
  3. 1
  4. 2
  5. 3
  6. 4
  7. 5
  8. 6
  9. 7
  10. 8
  11. 9
  12. 10
  13. 11
  14. 12
Alphabetical, as the table below. Each row lights the grades the publisher states.
Which grades are you shopping for?

All 3 reach pre-K or kindergarten:

  • CK-12 Kindergarten to 12th grade, plus some college and adult courses
  • Khan Academy Kindergarten to 12th grade, plus early college courses
  • Zearn Math Kindergarten to 8th grade

All 3 reach the elementary grades:

  • CK-12 Kindergarten to 12th grade, plus some college and adult courses
  • Khan Academy Kindergarten to 12th grade, plus early college courses
  • Zearn Math Kindergarten to 8th grade

All 3 reach middle school:

  • CK-12 Kindergarten to 12th grade, plus some college and adult courses
  • Khan Academy Kindergarten to 12th grade, plus early college courses
  • Zearn Math Kindergarten to 8th grade

2 of the 3 reach high school:

  • CK-12 Kindergarten to 12th grade, plus some college and adult courses
  • Khan Academy Kindergarten to 12th grade, plus early college courses
Alphabetical. We never rank programs, and none pays to appear.
ProgramSubjectsGradesMethodFormatCost a yearFaith label
CK-12CK-12 Foundation (nonprofit)Math, ScienceK–12TraditionalOn screenFreeSecular
Khan AcademyKhan AcademyMath, Language arts, Science, History and geographyK–12MasteryOn screenFreeSecular
Zearn MathZearn (nonprofit)MathK–8TraditionalOn screenFreeSecular

Each program in a line

  • CK-12: A family that wants free, solid math and science textbooks for the middle and high school years and is happy to plan around them.
  • Khan Academy: A family that wants free, self-paced practice in math and other core subjects, with a parent who is happy to choose the courses and check progress on a dashboard.
  • Zearn Math: A family that wants a free, steady math course on screen that follows the same order as many school math programs.

Before you buy

Check what is free and what is sold beside it, and how the program is kept going.

Give the publisher's placement test before you buy: levels rarely line up exactly with school grades, and a child moving from another program often places a level lower. Check what a year needs beyond the student book, such as a teacher's guide, test booklet or manipulatives.

Most publishers post samples and a placement test; each card links the placement test where the publisher has one.

Related lists

How we label

Every fact on a card was read on the publisher's own website on the date shown, and the page it came from is linked. A fact we could not confirm there is left out. Costs are for one child and one year of the main package, as the publisher's page showed them that day; prices and sales change. Method and format are the publisher's own description where it gives one. The only thing we say about religion is one label, secular or faith-based, given by the rule above; where the publisher's pages don't settle it, the card has no label.

No affiliate links, no sponsored places, no ranking. Something wrong or out of date? Send a correction; publishers can send corrections, never money.