The series consist of 9 books over a 3-year period beginning in 1980.
The series, consisting of 45 books, was published in the 1990s.
Each series consisted of 14 shows, 30 minutes in length.
The series now consists of five books with two more planned.
The series consists of three books and has been completed.
The series consists of seven films made between 1940 and 1962.
Series 1 consists of 10 episodes all around 9 minutes long.
Series two consists of six episodes all 30 minutes long.
The second series consists of six episodes, also one hour long.
Each series consists of 66 episodes, with 33 schools taking part.
