課程目標 Lesson objective: 

1. 利用廚房之菜梗學習製作有機堆肥

2. 觀察有機堆肥之變化

3. 學生能以觀察結果完成口試目標句

課程任務 Lesson Assignment:

1. 1st period: Rot, Refuse, Decompose, Landfill, compost

2. 2nd period:  Compost checklist. Learn about decomposition rates of different materials 

3. 3rd period: Compost checklist. Review the 5 R’s. 

4. 4th period: Assessment Day. 

5. Target sentences:

It takes _______ (days, weeks, months, years) for a ______ to rot/decompose.