After demonstrating how to put up a framework of beanpoles, he has the children walk the perimeter of the garden one time and use the number of steps to calculate the length. Afterwards, they go back to the classroom and discuss how many sections the garden should be divided into and calculate the number of poles they will need.
他先在園中示範什麼是立豆架，然後讓孩子在畦旁邊走一次，以腳步數計算長度，回到教室後再討論要分多少段，計算要立幾根柱子。