In the first volume, Inspector Numbers, with the help of the Street Mice, investigates the mysterious disappearance of the cameras of a film set in the center of Rome, assisting the child in the search for clues that will reveal the culprit.

• numbers from 1 to 20;
• mental calculations: addition and subtraction;
• geometry: visuo-spatial skills, shapes and their rotation;
• data and relations: probability;
• measurement: weight.
• A new series of activity books dedicated to primary school children for learning mathematics in a fun and original way.
  The volumes of the series – designed to follow school’s mathematics curriculum – propose various activities with an increasing level of complexity which aim to:
• stimulate attention to the mental processes that support the learning of mathematics;
• enhance divergent and creative thinking;
• involve the students through an intriguing narrative that takes its cue from puzzles and playful teaching.

Each volume of Numerical Intelligence Mini-Mysteries contains:

• a comic-style story featuring Inspector Number and a mysterious case to solve;
• numerous activities and math puzzles to complete in order to collect the clues;
• pictures of the suspects for consultation on the double cover of the volume;
• the stickers with which to complete the table of clues at the back of the book to identify the culprit.