Presentation

  1. 1

    Give each of two children a number made of small cards, such as 1,432 and 2,315. Each child brings that quantity from the bank.

  2. 2

    Each child lays out their beads with their cards above; check each one together.

  3. 3

    Say: 'Addition is putting together.' Push the two quantities into one pile, starting with the units.

  4. 4

    Count the combined units, then tens, hundreds, and thousands; find the large cards for each and stack them: 3,747.

  5. 5

    Lay the addend cards one below the other, lay the sum below them, and read: '1,432 plus 2,315 equals 3,747'.

  6. 6

    In a later lesson use addends whose units total more than nine. When a category reaches ten or more, the child exchanges before counting the next category.

  7. 7

    Have an older child record the problem on paper in columns.

Extensions, easiest to hardest

  1. Three addends.
  2. Exchanging in two or more categories in one problem.
  3. One child works alone with prepared problem slips and records answers.

Control of error

The child recounts the combined beads against the sum cards; any category with ten or more beads left in it shows a missed exchange.

Ready to move on when the child…

  • Combines, exchanges, and reads the sum without prompting
  • Starts counting and exchanging from the units
  • Explains what addition means in own words

Try “pink tower”, “tummy”, “diaper”, “grace and courtesy”, or “October”.