Audio 1 Teacherbot ( Lesson 1 - Testing) - This audio is a test if the Teacherbot created is functioning.  Audio 2 Teacherbot (Testing and Improving Register Block) - This audio is about Teacherbot. It tackles on testing and improving register block. Audio 3 Teacherbot (Lesson2 Block using IF functions) - This audio is about Teacherbot. The Lesson2 Block is tested using IF functions to convert the responses of students into numbers for generating the overall scores in the quiz2.