Title: When did people start to count?
Description: Simple text explores some different tools people use to count. Suggested level: junior.
Subjects: Readers, Counting, Juvenile literature, Families, African American families, Astronauts, Hardness, Matter, Properties, Dureté, Ouvrages pour la jeunesse, Matière, Propriétés, Counting books, Counting, juvenile literature, Natural resources, Ressources naturelles, Trees, Arbres