ანოტაცია: On Shaky Ground, from Discovery Education, is part of a high-quality illustrated book series for young readers. Sixty-four titles cover four popular subject areas --- social science, science, natural history, and history. The text is written for young readers at varying reading stages. The topics have been carefully selected to interest and engage young readers, and to stimulate critical thinking.
შემეცნებითი/განმავითარებელი 
კატეგორიები
