Here are a couple of ideas that worked really well for lesson 2 (listening and speaking) of this unit.
1. Line-up. Motivator and revision of vocabulary.
Split class into two teams. Get them to arrange themselves in height order as quickly as possible (award points to team that is faster). Then, starting from the tallest, get them to pass a ball down each line, saying "I'm taller than you", "Yes, you are taller than me" in turn. Teacher must check progress of each line and help if necessary. The team whose ball reaches the end of the line first wins. Repeat in opposite direction with "I'm shorter than you" etc.
2. Human Bingo. Language production game. Attached is the one I made, it worked pretty well (there are two bingo sheets on each).
Students have to mingle and fill out the blanks with the names of other students, to complete bingo lines. The more lines, the more points ( I did 1,2 or 3 lines = 1 point, 4 or 5 lines = 2 points, more than 5 lines =3 points). At the end students can read out the sentences and teacher can check.
Cheers!