by Ismael Sousa Martín, Fernando Reclusa Gluck, Ángel Nagore Ruiz, Jesús Pastor De Luis, Víctor Manuel Esparza, Rafael Gamen Ruiz · Editorial Brúixola · tapa blanda · ISBN 9788483042571
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«13 Problemes de sumar i restar. Iniciació» is the math activity book by Ismael Sousa Martín and others, in paperback (32 pages, in Catalan).
The book proposes simple addition and subtraction problems to get started with these operations. The cover examples include operations with euros and meters, and the activities combine exercises to consolidate basic concepts and extend them according to each student's pace.
The book belongs to the Quaderns de Matemàtiques collection from Editorial Brúixola and is recommended for Grades 1 and 2 of Elementary. It was published on February 24, 2006.
For students in first and second grade of Elementary, as supplementary math material to practice addition and subtraction.
