1. 1

    Invite the child and carry the basket to a mat.

  2. 2

    Take out the locks and line them up from largest to smallest. Lay the keys beside them.

  3. 3

    Pick up the largest lock. Choose a key and hold it beside the keyhole to compare sizes.

  4. 4

    Push the key all the way in. Turn it gently. If it does not turn, take it out and try another key.

  5. 5

    When it turns, pull the shackle up to open the lock. Hearing the click is the point of interest.

  6. 6

    Press the shackle down until it clicks shut. Take out the key and lay it beside its lock.

  7. 7

    Invite the child to open the rest. When finished, lock each one and put the keys back in the dish.

What catches the child’s eye

  • The click of the shackle springing open
  • Finding the one key that turns

Extensions, easiest to hardest

  1. Mix the keys before starting and match each one by trial
  2. Use smaller locks and keys
  3. Open and close a latch board with hooks, bolts, and chains

Control of error

Only the matching key turns; a lock not pressed down fully does not stay shut.

Ready to move on when the child…

  • Matches every key to its lock
  • Turns keys gently without forcing them
  • Locks each lock and returns all keys

Guide note

Count small keys in and out of the dish; they are a choking hazard for younger children. Do not use locks on any door, box, or cupboard a child could be shut inside.

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