| 摘要 |
PURPOSE: A transparent ladder teaching material is provided to two of children to simultaneously climb up and down a single ladder. CONSTITUTION: A transparent ladder body(20) includes a ladder frame(40), a ladder foothold(60), and a ladder support(80). A child steps on the ladder foothold with feet. Sides of the ladder foothold and the ladder support are plated with a transparent member. Rubber, silicon, and fabrics are applied to the ladder foothold or used as an outer cover. |
