Montessori AMI Primary Guide
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Numbers through Ten
  Number Rods
  Sandpaper Numbers
  Number Rods and Cards
  Spindle Boxes
  Concept of Zero
  Cards and Counters
  Memory Game
Decimal System
  Introduction to quantity
  Formation of Numbers
  Stamp Game
  Dot Game
  Word Problems
Linear & Skip Counting
  Teens: Quanity
  Teens: Symbol
  Tens: Association
  Linear Counting
  Skip Counting
  Number Roll
Tables of Arithmetic
  Addition Snake Game
  Strip Board - exercises
  Addition Strip Board
  Addition Charts
  Substraction Snake Game
  Substraction Strip Board
  Substraction Charts
  Multiplication Bead
  Multiplication Board
  Multiplication Charts
  Unit Division Board
  Division Charts
Passage to Abstraction
  Small Bead Frame
  Wooden Hierarchical Material
  Large Bead Frame
  Racks and Tubes

Sandpaper Numbers


- Numerals from 0 to 9, cut out of sandpaper and mounted on separate green boards. (The 0 is presented after the Spindle Boxes, when the concept of zero has been introduced.)


(Done is a similar way as with Sandpaper Letters)

  • Have the child bring over the material.
  • Begin by sensitizing your fingers.
  • Take out 1, trace three times and say its name: “one”
  • Give to the child to repeat.
  • Place the board at the top of the table.
  • Repeat for numbers 2 and 3.
  • Do a Three Period Lesson with numbers 1, 2, and 3.
  • Repeat for numbers 4, 5, and 6.
  • Then repeat for numbers 7, 8, and 9.
  • Depending on the child, this may be taught over a few days.


To teach the child the symbols for the numbers he knows.
To provide him with the keys to the world of written numbers.

Preparation for the writing of numerals.

Control of Error
The sandpaper guides the child’s fingertips.

4 years onwards, when number rods have been introduced.

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