Become a whiz at Mathematics and help the Black Sheep find the real culprits! The Black Sheep has been entangled in the most incredible adventures since childhood. His complaint was that he was accused without the evidence being checked first. That's why, now that he has grown up, he has made it his life's mission to defend those who are wrongly accused.

However, to prove their innocence, he also needs your help. Follow him on the cases he needs to solve.

Activity book for the entire school year. Systematic and fun revision of the Mathematics curriculum for the 4th grade of primary school, with the help of math puzzles and unexpected adventures that enhance logic, mathematical thinking, and empathy.