Growing Vegetable Soup Classroom Recipe Reading the book Growing Vegetable Soup by Lois Ehlert, and then making vegetable soup is the perfect companion activity for a spring theme. Make learning about spring and vegetables fun with this super easy classroom recipe.Read Growing Vegetable Soup by Lois Ehlert then make soup with kids for a nutrition lesson and activity about healthy eating for preschool, pre-k, and kindergarten.