Shuffle and place all the cards with the star face up in the centre of the students.
Turn over the green traffic light card. On the back of the card is the word 'cat'. The students have to find the picture of a 'cat'. The student who finds the picture turns over the card. On the back of the card is the word 'cow'. The students have to find the picture of a 'cow'. 
The game carries on until the last card is turned over.
The last card is the red traffic light.