Once upon a time, there was an inventor named Tim. He loved to experiment with steam engines and boilers. One day, he built a powerful locomotive that used steam power. But the pressure inside the boiler was getting too high and Tim feared it might explode.

So he came up with a brilliant invention. He added a valve to release the extra pressure and prevent the boiler from exploding. The locomotive could now expand its power and run faster than ever before.

Years passed and Tim's invention became very popular. People all over the world were using his steam engine in their trains. But then, a new type of engine was invented, called a diesel engine. It was more efficient and didn't use steam, so Tim's steam engine became less popular.

But Tim was proud of his invention and he knew that it will always have a special place in history. He never stopped believing in the power of steam and the importance of keeping pressure under control. The end.

Reflections

1. Why was Tim worried about the pressure in the boiler of his locomotive?
2. What was Tim's invention to prevent the boiler from exploding?
3. Why did people all over the world start using Tim's steam engine in their trains?
4. What new type of engine was invented that made Tim's steam engine less popular?
5. Why was Tim proud of his invention?