by Ana Alonso, Maria Espluga · ANAYA INFANTIL Y JUVENIL · tapa blanda · ISBN 9788467841596
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«El palau subterrani» is the children's novel by Ana Alonso, illustrated by Maria Espluga, published by Anaya Infantil y Juvenil in paperback (96 pages).
The dragon Minus and the elf Berk sneak into an underground passage that leads to an enchanted palace. To survive, they must learn to read some curious symbols and discover the secret of the place. The adventure serves as an introduction to Roman numerals and a review of the concepts of greater and lesser, number decomposition, and subtraction with carrying.
It was published in March 2013 within the Pizca de Sal collection, called Pessiguet de Sal in its edition for the Valencian Community.
Aimed at young readers aged 8 and up who want to review math while following the adventures of the dragon and the elf.
