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Juegos, Acertijos, Y Recreaciones Matematicas
In Spanish. A variety of logic problems, including puzzles and word problems with links to the answers. An excellent site to engage Spanish speaking students.
Ministry of Education and Employment of Spain
Red Escolar: El Crucigrama De Hipatia
In Spanish. Hypatia of Alejandria was a great mathematician that from an early age taught and investigated almost all branches of mathematics. To remember her solve the crossword puzzle involving problems of arithmetic, geometry and...