Join Barbie as she visits and helps a doctor in this all-new You Can Be a Doctor Step 2 Step into Reading leveled reader! When Barbie visits the doctor, Dr. Vargas shows Barbie how to weigh and measure patients, and even helps take off an arm cast! Children ages 4 to 6 will love to read how Barbie visits and helps a doctor in this Step 2 Step into Reading leveled reader. Step 2 readers use basic vocabulary and short sentences to tell simple stories. For children who recognize familiar words and can sound out new words with help.