語言功能：敘述、解釋、比較、期望

學習目標：

1. 能表達「萬」、「千萬」、「億」

三個大數

2. 能使用「大約」表達概數

3. 能了解世界的人口數量

4. 能了解人口過多造成的問題

Lesson 3: World Population

Linguistic Functions: describing, explaining, comparing,

expecting

Learning Objectives:

1. Can express numbers using “ten thousand”, “ten million” and “hundred million”.

2. Can use “about” to express estimates.

3. Can understand world population size.

4. Can understand the problems created by overpopulation.