"Imagine printing a human heart with the click of a button. Sound impossible? Scientists and doctors are getting closer to transplanting human body parts made from 3-D printers. Learn how doctors are using 3-D printers to save lives as you add and subtract fractions"--Provided by publisher.
Looks at fractions, decimals, and percents as different ways of describing pieces, parts, and portions in the language of mathematics. Presented in English and Spanish.
Gives several examples of recipes used during the Civil War, such as gingerbread, groundnut soup, gumbo, and hardtack, and shows how to add and subtract fractions to double, triple, or halve the ingredients.