Worksheets with six words in each. Three of these words begin with sh and the other three begin with ch. However, the words are written without the beginning sh and ch. The students work in pairs, they get a worksheet and write SH or CH in the circles. Alternatively, the teacher collects bigger plastic lids and writes sh and ch on them using a black permanent marker.The students' task then is to place the right lid to the words and make them complete. Finally, the students practise the pronunciation of the words, noticing the difference.