Return-to-Shelf Behaviour and Engagement Duration in a Toddler Montessori Environment

This record contains a short, self-archived research report from the Blue Blocks Micro Research Institute on how toddlers in a single Montessori classroom close their work cycles — whether a child returns a chosen material to the shelf unaided, returns it only after an adult prompt, or leaves it on the mat — and how long each child stays engaged with a material. Across three afternoon sessions in March 2026, one observer logged 45 self-selected work cycles for six children aged roughly one-and-a-half to three years. The report is deliberately descriptive rather than causal: it characterises the patterns in this one group and does not attempt to generalise or test hypotheses. Its practical interest is that most materials did come back to the shelf, yet only about half were returned without adult help, and independent return tracked neither a child's age nor how deeply they engaged — which points to the closing transition of the work cycle as a distinct, potentially teachable skill worth deliberate scaffolding. The study is offered as a transparent, reproducible template for larger and better-controlled classroom observation. The deposit comprises the manuscript and four figures. The underlying de-identified observation data are archived separately (see Related works); the participant codes used here (C01–C06) map directly onto the identifiers in that dataset.