Jimmy quizzes consumers about what breakfast cereals are made from and explains that they are all made from grains. He makes some popcorn to illustrate that when heated the corn bursts out of its jacket. This same principle is used to make puffed rice. Jimmy recreates how a food factory would puff the rice using a high pressure cannon.

Could be used to develop knowledge of how cereal grains are processed to produce the recognisable breakfasts cereals. Where possible, the teacher might prepare a range of cereal grains alongside their processed form, exploring the processes involved in the transformation.