Subtraction With the Stamp Game

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Subtraction With the Stamp Game
Math - Arithmetical Operations
SG SS 9.JPG
LevelPrimary
Age5+
PrerequisitesUnderstanding of Decimal System
MaterialsStamp Game Box
pencil
green pencil
blue pencil
red pencil

This activity teaches the child to do subtraction problems at a higher level of abstraction.

Presentations

Static Subtraction

  1. Take the material to a table. No divider line is needed for subtraction.
    SG SS 1.JPG
  2. Write out the problem.
    SG SS 2.JPG
  3. Lay out the stamps for the first number (the minuend).
    SG SS 3.JPG
  4. Slide down the unit stamps for the second number (the subtrahend). Record the amount of unit stamps still left at the top.
    Then do the same for the tens, then the hundreds, then the thousands.
    SG SS 4.JPG SG SS 5.JPG SG SS 6.JPG SG SS 7.JPG
    SG SS 8.JPG

Dynamic Subtraction

  1. step one
  2. step two, etc.

Points of Interest

Control of Error

Variations and Extensions

Material

A standard stamp game set includes 81 unit stamps, 81 ten stamps, 81 hundred stamps, 18 thousand stamps, 9 unit skittles, 9 ten skittles, 9 hundred skittles, 1 thousand skittle, 9 green circles, 9 blue circles, and 9 red circles.

Make Your Own

Stamp Game color pdf icon.jpg
Stamp Game black & white pdf icon.jpg
Math Paper pdf icon.jpg
Stamp Game tiles in color Stamp Game tiles in black and white Math Problem Paper

Where to Buy

Prices and links checked: 07 October 2020
(Amazon/Bookshop are affiliate links, which help cover costs of running the site.)

Introduction to the Stamp Game
Store Price
Absorbent Montessori $47.00
Adena $36.60
Affordable Montessori $33.00
Alison's $36.75
Bruins $89.00
E & O $43.20
IFIT $26.00
Kid Advance $27.99
Material Company of Boston $48.00
Montessori Outlet $32.95
Nienhuis $62.43
Thinkamajigs $33.95
Decimal Stamp Game Sets
Store Price
Alison's $44.88
Montessori Outlet $29.95
Nienhuis $58.29