Some reviewers find the material to be highly .
: Many parents report that the "Harmony" program is excessively difficult, sometimes to the point where even adults struggle to decipher the intended logic of the problems.
: Counting up to 100, mental addition, and subtraction.
A significant portion of reviews from parents on platforms like Labirint and Ozon highlights several challenges:
Not a member yet? Register now
Are you a member? Login now