K12 Reader
Eratosthenes: Geographer and Mathematician
Mathematicians can be famous, too! Introduce your class to Eratosthenes with a reading passage. After they complete the passage, learners respond to five questions, some of which require opinions and others reading comprehension skills.
Curated OER
Measuring the Earth (Eratoshenes' method)
Sixth graders engage in problem solving, communicating, reasoning, and connecting to represent and solve problems, using geometric models.
ibiblio
Ibiblio: Ptolemy's Geography
Brief discussion about Ptolemy's geography. Includes pictures of publications from ancient Greece based on Ptolemy's beliefs.