Colour Breathing!
With your pupils in a comfortable position, take them very slowly through this simple exercise.
Sit comfortably and relax your shoulders and body.
Notice the sounds in the class – this may be the lights, people outside, another class. You can hear these sounds and they are OK.
Now think of your calming colour and take time just to think about this colour and imagine what it looks like and how calm it makes you feel.
You are now going to slowly breathe in through your nose, thinking of this colour: 1, 2, 3, 4. 5.And slowly breathe out with your colour 1,2,3,4.
Repeat for as long as you wish with your class.