These videos relate to the first few pages of Notes Packet 8.2.  The learning objectives they cover are:

• Explain the difference between a strong and weak acid
• Identify the 7 strong acids and the strong bases
• Calculate the pH of a strong acid
• Calculate K when given pH of a weak acid
• Calculate pH when given K for a weak acid

I covered these notes in class, but if you were absent or want a review, here they are!