# Addition With the Stamp Game

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Math - Arithmetical Operations
Level Primary
Age 5+
Prerequisites Understanding of Decimal System
Materials Stamp Game set
pencil
green pencil
blue pencil
red pencil
math problem paper
divider (stick, pencil, string, or ruler)

This activity lets the child practice addition at a higher level of abstraction.

## Presentations

1. Take the material to a table.
2. Write out a problem.
3. Lay out the first addend.
4. Lay out the divider under the first addend.
5. Lay out the second addend.
6. Move the divider out of the way.
8. Count the stamps beginning with the units.
Record the answer for each place value as the stamps are counted.

2. When it is time to count the units, stop when you have counted 10.
3. Stack the 10 units, and exchange them for 1 ten. Place it in the tens column.
Count the remaining units and record the answer on the paper.
4. Count the tens stamps and stop when you get to 10.
5. Stack the 10 tens, and exchange them for 1 hundred. Place it in the hundreds column.
Count the remaining tens and record the answer on the paper.
6. Count the hundreds stamps and stop when you get to 10.
7. Stack the 10 hundreds, and exchange them for 1 thousand. Place it in the thousands column.
Count the remaining hundreds and record the answer on the paper.
8. Count the thousands and record the answer on the paper.

## Material

Absorbent Montessori \$47.00
Affordable Montessori \$29.00
Albanesi \$142.00
Alison's \$35.00
Bruins \$89.00
E & O \$48.00
ETC Montessori \$89.00
IFIT \$25.00
Juliana Group \$117.18
Jump Start \$14.24
Material Company of Boston \$78.00
Mindset \$113.66
Mindset \$44.46
Montessori Concepts \$22.00
Montessori N' Such \$50.00
Montessori Outlet \$26.95
Montessori Stores \$98.00
Nienhuis \$97.70
Thinkamajigs \$31.95
Meroco Montessori \$21 (Stamp Game With box)

Decimal Stamp Game Sets
Alison's \$45.00
Mindset \$71.84
Nienhuis \$97.70