In this post, we explain what these materials consist of, how you can obtain them legally for free, and why they are excellent tools for educational reinforcement.

Escritura, identificación y seriación de números del 0 al 29 (en el nivel 3) y conocimiento de números romanos y ordinales.

The series is popular because it uses a . Instead of rote memorization, it encourages children to build their own understanding through: