主題：Push and Pull

班級：S-1

單字：Push(推), force(力量), wagon(貨車), faster(快點), empty(空的), harder(更難), uphill(上坡), heavier(較重), objects(物體), downhill(下坡).

句子：

1. What happens when you peddle a bicycle harder? It will go faster.
2. It is easier to push a smaller person on a swing? Yes, it is.
3. It is easier to pull on empty wagon? Yes, it is.