Formas geométricas

https://www.youtube.com/watch?v=tN5aDt07ZWg

https://www.youtube.com/watch?v=t-iUvSs0h_A 

Aprender a tabuada

https://www.youtube.com/watch?v=HjKZbp6AekE

https://www.youtube.com/watch?v=MCCtWuTgDuM