คำแนะนำของผู้เขียน
Изследователски задачи
Събиране с преминаване
Active — user can report
คำแนะนำของผู้เขียน
Изследователски задачи
สำรวจแผ่นงาน
Računanje do 20 s prehodom
- Math
- 1st grade
Събиране и изваждане до 20
- Math
- 1st grade
Изваждане на едноцифрено число от 15 и 16
- Math
- 1st grade
