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

Teens: Symbol


- Two boards each divided into five compartments. In nine of these compartments a large 10 is printed in black.
- A set of cards, on which are printed the figures 1 – 9, which will slide into the boards, covering the ‘0’.



  • Have the child unroll a long mat.
  • Show the child the material and have him bring over the material. Sit at the mat so it is vertically in front of you.
  • Place the two boards in a vertical line at the top of the mat.
  • Place all of the cards, in random order, to the right of the board.
  • Point to the first slot and ask what it is. (10)
  • Point to each until the child realizes that each has 10.
  • Slide the 1 card into the units spot in the top slot. Say, “This is eleven.”
  • Slide in the 2 card into the second slot and tell the child, “This is twelve.”
  • Repeat to create 13 under 12.
  • skip and counting symbols illustration

  • Do a Three Period Lesson for 11, 12, 13. For the 2nd Period, take out the cards and have the child “create” 11, 12, 13.
  • Repeat, three numbers at a time until you have done 11-19.

Stage B

  • Have the child make the numbers 11-19 in random order directed by the directress.
  • Have the child take out the cards and have him create 11-19 in order.
  • Once the child is done, count all the numbers in order, and then backwards.


To connect name and symbol.

Control of Error
The child’s own knowledge.

4 1/2 years onwards

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