Before giving a presentation, the Montessori teacher analyses the activity she wants to show to the child. Procedures or movements that might prove troublesome are isolated and taught to the child separately. For example, holding and snipping with scissors, a simple movement, is shown before cutting curved or zigzag lines; folding cloths is shown before table washing, an activity requiring folding. A task should neither be so hard that it is overwhelming, nor so easy that it is boring.