Safety

  • The smallest cup must not fit the small parts test cylinder (1.25 in. × 2.25 in.).
  • Use wood, metal, or sturdy plastic cups, not glass or ceramic, and check for cracks and sharp edges before use.

Presentation

  1. 1

    Invite the child to a low table or a floor mat and sit beside them.

  2. 2

    Take the nested cups out of the basket and separate them slowly, one at a time, placing them in a random row.

  3. 3

    Pick up the largest cup and place it in front of you.

  4. 4

    Pick up the middle cup, look at both cups, and lower it into the largest.

  5. 5

    Pick up the smallest cup and lower it into the middle one. Point of interest: each cup dropping inside the next.

  6. 6

    Take the cups apart again and offer them to the child. Let them try without correcting.

  7. 7

    If the child pushes a larger cup onto a smaller one and stays stuck, wait. If they look to you, place the cups side by side and say only, "Try another."

Extensions, easiest to hardest

  1. Five cups instead of three
  2. Turn the cups upside down and stack them into a tower, largest at the bottom
  3. Hide an object under the largest cup for the child to find, using an object too large for the small parts test cylinder

Control of error

A cup that is too large does not go inside the next one; if the order is wrong, a cup is left over at the end.

Ready to move on when the child…

  • Nests three cups in order without help
  • Tries a different cup when one does not fit, without looking to the adult
  • Nests five cups
  • Stacks the cups upside down in a tower from largest to smallest

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