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Theme

intelligence and problem-solving

Books about intelligence and problem-solving for readers of all ages.

Cover of Clifton - My Dear Wilkinson (Clifton)

Clifton - My Dear Wilkinson (Clifton)

De Groot, Turk

Ages 7–12mysteryadventure

Cover of A girl named Digit (Digit #1)

A girl named Digit (Digit #1)

Annabel Monaghan

Ages 9–13intelligence and problem-solvingcourage

Cover of All In

All In

Jennifer Lynn Barnes

Ages 13–18mystery and investigationteamwork

Cover of Freddy the detective

Freddy the detective

Walter R. Brooks

Ages 8–12mystery and detective workintelligence and problem-solving

Cover of Spy School secret service

Spy School secret service

Stuart Gibbs

Ages 8–14friendshipintelligence and problem-solving

Cover of Friday Barnes, Under Suspicion

Friday Barnes, Under Suspicion

R. A. Spratt

Ages 9–14mystery and detective workintelligence and problem-solving