Lightspeed (Must Join)
Period #1 - https://classroom.lightspeedsystems.app/join-group/g-sjwgx7k-320
Period #2 - https://classroom.lightspeedsystems.app/join-group/g-sjwgx7k-323
Period #3 - https://classroom.lightspeedsystems.app/join-group/g-sjwgx7k-325
Period #4 - https://classroom.lightspeedsystems.app/join-group/g-sjwgx7k-326