A Number Puzzle a Day

About the Author

Sam grew up in Buckinghamshire, falling off various bicycles before reading books and making up his own stories about more competent heroes. After studying English at Cambridge University, he joined Usborne in 2013, and now writes titles ranging from fold-out solar systems to maze books full of swashbuckling pirates. Sometimes, Sam cycles to work. Phil Clarke grew up in the Cotswolds, and joined Usborne in 2000. He's written far more than he can rightly recall about such things as trees, stars, rocks, sharks, unicorns and dinosaurs, and crafted many puzzles. He lives with his family in the Midlands, and spends his spare minutes sleeping. Kirsteen Robson joined Usborne in 1997 with a background in music, education, and Christian publishing. She has written and edited over 300 Usborne titles, from dictionaries and encyclopedias to activity books with flaps, stickers and sounds. She loves the challenge of writing about anything from aardvarks to zombies. Kate grew up in the Cotswolds and now lives in the West Midlands, where she worked as a primary school teacher before joining Usborne in 2019. Since then, she has worked on books on all sorts of topics, from airports and trucks to unicorns and butterflies.