Grandpa accidentally lets out a burp as he and Alex walk to the local shop. Amid fun and laughter, a burping competition then ensues.
Later at home, baby Anna burps up some milk onto Grandpa’s shoulder just as the midwife arrives.
With the Midwife’s help Alex discovers not only how burps are made but also how his baby sister, Anna, grows and responds to his every word and action.
Read this story to find out where your stomach is and how your brain develops.