Greg Tang

Scholastic

The Grapes of Math: Mind-stretching Math Riddles (Scholastic Bookshelf)

Scholastic

Math-Terpieces: The Art of Problem-Solving      

Scholastic

Best of Times: Maths Strategy                    

unknown

math-potatoes                                    

Scholastic

Math for All Seasons: Mind-Stretching Math Riddles

CIRCONFLEXE

Maths Sans Echecs                                

Math Fables: Lessons That Count                  

Scholastic Pr

Math Appeal: Mind-Stretching Math Riddles        

Scholastic

Math Fables Too                                  

Editorial Everest

Come una y cuenta veinte. Acertijos matemáticos para despertar la mente (Rascacielos)