7th Grade - helpful videos

Mutually Exclusive Events
https://www.youtube.com/watch?v=w-C7KVaCZGw

Independent Events
https://www.khanacademy.org/math/precalculus/prob_comb/independent_events_precalc/v/independent-events-2

https://www.khanacademy.org/math/precalculus/prob_comb/independent_events_precalc/v/compound-probability-of-independent-events

Tree Diagrams
https://www.khanacademy.org/math/precalculus/prob_comb/independent_events_precalc/v/compound-events-tree-diagram