Lesson over 6.1-6.3: https://drive.google.com/file/d/1NhaUe8zaNpxPNNZIE_2JcvHX21a_5QKD/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 7.1 and 7.2: https://drive.google.com/file/d/1Im70SQwsVYr-kU-TIhkODvkJAbqLGe7D/view
Lesson over 7.3 and Similar: https://drive.google.com/file/d/1S9SHI-RUb7GctGw1wzVQyqSYP78vSFLh/view
Lesson over 7.4: https://drive.google.com/file/d/1xMEYn3qNH5k_ueh25wBhEBpDzta0Fwyu/view