Short burst writing in Year 2

In the morning when the children first come into school and the teacher is calling the register, they are either given a maths task to do, like Number of the Day, or a writing task, like short burst writing. 
Here is an example of short burst writing from Year 2. Miss Richardson has chosen an interesting picture to display on the board to get the children thinking and then the children have written sentences about it while the register is being called.