what are the physical and cognitive changes pre-teen experience as they transition to adolescence?(boy adolescence)

The prompt is: imagine that you have been asked to write an article for a parenting magazine that will guide parents of pre-teens as their children enter adolescence. The goal of your article is to help parents understand the physical and cognitive changes their pre-teen will experience as they transition to adolescence. Your article needs to focus on boy adolescence. In the article, help parents understand what you consider important to help them better prepare their child to deal with these changes.