... reads: 6, 25 , 20 0, 12, 17, 400, 8, 900, 20 , 10, 52, 32, 60 0, 100, 41 2. Pre reading: Open prediction. - Ss guess what these numbers are about, to do with schools. 400, 900, 8, 20 eg: Students, ... Unit four: BIG OR SMALL ? A3 - 5 (P45 - 46) I. AIMS: By the endof the lesson, Ps will be able to ask and answer about numbers, places and characters of things. - Teaching aids: handbook, ... handbook, pictures, cassette. - Anticipated problems. II. CONTENT. 1. Warmer: Bingo T elecits and lists numbers on the board. 6, 8, 12, 20 , 52, 20 0, 32, 41, 400, 17, 25 , 60 0, 90, 10. + Ss choose...