Week-4
https://docs.google.com/presentation/d/10orPRmFQIJhOiGjwv91Cel3_R_Vn5XsJ0oUHDUt_Zfk/edit#slide=id.p
week- 5 https://docs.google.com/presentation/d/1tscauIOJUj4q6hYXybu0_rz-O5p0Q4T5MExrAmZoumo/edit#slide=id.g35f391192_00
week 6-
https://docs.google.com/presentation/d/15qbNgN_nR71GL9eaNcJtZqEP2CG-Vy3IfarjN99Nxjc/edit
week 7-
https://docs.google.com/presentation/d/1GrFGj0LvZdSUobf8D6lQ9V5-ruvREsZNhoQw9WP2kJ0/edit
https://docs.google.com/presentation/d/19fQPtu0AFy_PenvvEcK8Wo_bnHN7Z8SOZCVbKrH6aGw/edit