Verified answer

a computer - it is made of plastic. It was used for playing games, usinf the Internet.

a pen - it is made of plastic. It was used for writing on the paper.

a book - it is made of paper. It was used for reading and learning.

a calculator - it is made of plastic. It was used for calculating.

a Cd player - it is made of plastic. It was used for listening to music.

If in 2400 my room is visited by historians, for certain they will see than I am engaged. Textbooks, disks with music or pencils and an album to draw. They can see and learn my musical tastes, my creative abilities. They will see my desktop. On it textbooks always lie. They can learn as I study. They can look at my bed. On it toys always sit. On my case pencils, paints and an album always lie. They will be able to learn that I am very creative person.