Collection

Magnetic 3-in-1 Combination Game Set – 8 inches

Crack open Ruby Redfort’s second adventure — and you will literally be on the edge of your wits.

How both logical and emotional reasoning can help us live better in our post-truth world

How do you catch a thief who isn’t there? Ruby discovers the perils of throwing caution to the wind as she embarks on her fourth adventure.

Lux™ 66 Piece Set

Paperback | 448 pages

A fun and stunningly illustrated introduction to the art of linear optimization

On Beyond a Million

Seven Journeys to the Frontiers of Science

How Many? is not like other counting books.

Hardcover | 48 pages

Red Blazer Girls: The Ring of Rocamadour