Lesson over 6.1: https://drive.google.com/file/d/1Hsm5rjCT_Ve-8XaVjRrks-0tZBAqXYHo/view
Lesson over 6.2: https://drive.google.com/file/d/1LpT0bYFy7oal1b_u8EnFmihZ3Z3kgWcd/view
Lesson over 6.3: https://drive.google.com/file/d/1fNemE-wgPIfk8MIvw2m3RjjhVdnL6PE1/view
Lesson over 6.4: https://drive.google.com/file/d/1X6aYNmaTGUlzOn3RbmR3wJKHSXNAf10N/view
Lesson over 6.5: https://drive.google.com/file/d/1nq8Tm2QID40J9q44Cmti_WRbbN8giWFo/view
Lesson over 6.6: https://drive.google.com/file/d/1RuY7CFUn57iA64El7ayU80nR9WUumL4U/view
Lesson over 6.7: https://drive.google.com/file/d/1reeTLHSkLD2Kkf_kbwc7N0C2YKpiyArL/view
Lesson over 6.8: https://drive.google.com/file/d/1LnmR5BVi_8OMNj2FpzzCpaSxzDGdhHWZ/view