Michael Holt (author)
Encyclopedia
Michael Holt is a UK
United Kingdom
The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

 author of puzzle
Puzzle
A puzzle is a problem or enigma that tests the ingenuity of the solver. In a basic puzzle, one is intended to put together pieces in a logical way in order to come up with the desired solution...

 and quiz
Quiz
A quiz is a form of game or mind sport in which the players attempt to answer questions correctly. In some countries, a quiz is also a brief assessment used in education and similar fields to measure growth in knowledge, abilities, and/or skills.Quizzes are usually scored in points and many...

 books for children, including several Doctor Who
Doctor Who
Doctor Who is a British science fiction television programme produced by the BBC. The programme depicts the adventures of a time-travelling humanoid alien known as the Doctor who explores the universe in a sentient time machine called the TARDIS that flies through time and space, whose exterior...

related quiz books and Crisis In Space in the Make Your Own Adventure with Doctor Who series. He was also the co-author of Puffin Books' Big Book of Puzzles series. He taught mathematics and geometry in London schools in the 1960s and 1970s.
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