Unlocking Addition

1
Unlocking Addition

• The Senari Adaptation of
• Montessoris Stamp Game

2
Materials List

• Foam sheets 1 black sheet for backing, 1 each
  of red, blue, and green for strips.
• Headers for the strips 1, 10, 100, etc
• Addition worksheet with corresponding answer
  sheet from Worksheet Generator 1.
• Stamps from Primary Math Manipulatives, printed
  on pink, blue and green paper.
• Containers to hold the stamps.
• Separators of ribbon or string to separate the
  addends.

3
Preparation of Materials - 1

• The Board
• Black foam sheet as backing 3 foam strips and
  headers glued to backing.
• Units and thousands green
• Tens and ten-thousands blue
• Hundreds - red

4
Preparation of Materials - 2

• Problem strips
• Cut a worksheet and answer sheet from the
  worksheet generator into horizontal rows.
• With the blank sides together, staple the answer
  sheet and worksheet together at one end.
• When student finishes, he opens the strip to
  check his work.

5
Preparation of Materials - 3

• Single problems
• Cut a worksheet and answer sheet from the
  worksheet generator into horizontal rows.
• Flip the answer sheet over and put the blank
  sides of the sheets together so that the problems
  and answers match.
• On the problem side, staple each problem.
• Cut the problems apart.

6
Storage of Materials

• Problem Strips
• large business size envelopes.
• Single problems
• zip-lock bags
• Label containers
• Example
• 3 digit 3 addends

7
Addition Stamp Game - Step 1

• Set up the exercise
• Place containers with stamps over each column.
• Place a ribbon to indicate space for carrying
• Get problem or strip of problems.

8
Addition Bank Game - Step 2

• Set up the problem
• Make the first addend with stamps
• Place a separator below the 1st addend.
• Make the 2nd addend.
• Continue the process until the student has made
  each addend.
• Be sure each addend is separated from the others.

9
Addition Bank Game - Step 3

• Step 3
• Place another ribbon below the second addend.
• Keep that sense of order!

10
Addition Bank Game - Step 4

• Step 4
• Complete the third addend.
• Add another ribbon to complete the process

11
Addition Bank Game - Step 5

• Step 5 - Exchanging
• Count all the pieces in the units column.
• When you get to 10, exchange them for 1 ten
  piece. Put it in the carrying space.
• Repeat with the tens and hundreds columns.

12
Addition Bank Game - Step 6

• Step 6 - Completing the Exchange
• Always begin with the units column, and continue
  to the left.
• The carrying space of a column should be included
  in the count.

13
Addition Bank Game - Step 7

• Step 7 - Completing the Answer
• When complete, each column should have less than
  9 pieces in it.
• Write the answer on the worksheet section.

14
Addition Bank Game - Step 8

• Checking the Answer
• When the problem is complete, the student checks
  the answer.
• If an answer is incorrect, the student should be
  able to find his mistake.