1. Cambridge University Press Edited by Jack C. Richard and David Nunan

2. Merely thinking and talking about what has happened will often mark it possible for the teacher to modify their own behavior. T- Try again.

3. T- Team-teach. Some options may require demonstration. It is difficult, for explain in words the characteristics of effective drilling, or the efficient organization of group work-such things are easier to demonstrate.

4. T- Train. For some purpose or in some contexts, training may be the most effective or economical or feasible strategy. This will generally take place outside the classroom.

5. Unit 6: Science and Technology Topic : Impacts Matthayomsuksa 4

7. The Water Cycle and Human Impact on water Cycle

8. Vocabulary water cycle

9. evaporate

10. precipitation

11. aquifer

12. pesticides

13. hazardous

14. Introduction Earth's water is always moving and the Water Cycle (also known as the Hydrologic Cycle) describes this movement of water on, above, and below the surface of Earth. Since the water cycle is truly a "cycle," there is no beginning or end. Water changes states among liquid, vapor, and ice at different places in the cycle, and these changes are happening all over the world at the same time.

17. Human Impact on water Cycle

20. Together, these various effects determine the amount of water in the system and can result in extremely negative consequences for river watersheds, lake levels, aquifers, and the environment as a whole . Therefore, it is vital to learn about and protect our water resources .

23. Activity1 : T-Try again Merely thinking and talking about what has happened will often mark it possible for the teacher to modify their own behavior.

24. If there is not enough water, plants will dry up. If there is not enough water, animals will be thirsty . Example

26. The Question

27. http://shoalwater.nsw.gov.au/Education/watercycle_experiment.htm