Author’s practical guidance
Protecting deep concentration
Source named in the book: Montessori · executive function research (Diamond)
A three-year-old lining up bottle caps for eleven minutes is doing something rare and valuable.
Say this now
(to yourself) "I am not going to interrupt this."
The most useful sentence here is one you say to yourself and then act on.
“You were busy. Tell me about it when you're done.”
Afterwards, if at all. They may not want to.
Do this
- Do not interrupt to praise.
- Move the schedule if you can. A deep stretch is worth being late for.
- Warn before you have to end it, and make the warning real.
- Keep the space plain: fewer toys out, less noise, nothing new introduced.
- Note when it happens. Most children have one reliable hour in the day.
Avoid this
- "What are you making?" mid-concentration.
- "Good job!" called across the room — praise is an interruption like any other.
- Tidying around them while they work.
If it repeats
Three to five minutes at two, around ten at three, twenty or more at four for something they chose. Attention to an activity you chose for them is always shorter — often by half.
Why the book suggests this
A three-year-old lining up bottle caps for eleven minutes is doing something rare and valuable. Sustained attention is built by being used, and it is used only when nobody interrupts.
Adults interrupt constantly and kindly: a question, a compliment, an offer of a better activity. Each one costs the child the thread — and the thread is the thing being built.

From this collection
Same Words: Big Skills
45 prepared situations in this family area.