Here's a lesson (powerpoint, notes, and an activity worksheet) for time to talk 1 - Body math

Basic lesson plan:
Say 'Hi'
Review types of stores and what you can buy there
Go over the important phrases - students should follow along and fill in the first bit of the worksheet
Do part A, page 114
Students make a shop (see worksheet)
Do part B, page 114
If there's time, have a server race (see powerpoint) using the pizza and coke pics (students ask server for pizza, coke, or both according to birthdays or letters in names or number of siblings etc.)

Here is a powerpoint dialogue activity I made to practice the dialogue.  The students have to shout out what they remember.  Clicking on the appropriate number on the home slide takes you to another slide where students see the answer.  The class can repeat at this point.  The student The jack in the box in the bottom right corner takes you back to the home slide.  There are more detailed instructions at the beginning.  It can be modified as necessary.  I modified it from a ppt by Jacob Boer.