Currently it is thought that as many as six out of 10 adolescents skip breakfast; so researchers at the University of Missouri conducted a three-week study of a group of teenagers who usually skip breakfast. One group continued to miss breakfast while the other group now consumed a 500-calorie breakfast containing cereal and milk. At the end of each week volunteers completed a questionnaire and underwent a brain scan.
Finding show that those who ate breakfast felt fuller and less hungry throughout the day than breakfast skippers. Brain scans show that breakfast eaters experienced less activity in the areas responsible for controlling food motivation and reward.
grainchain.com has several related resources for various age groups. For 7-11 and 11-14 year olds we have complete sections on balancing energy input with energy output which also includes a section to design ones own breakfast.