Illustrative Mathematics
Eratosthenes and the Circumference of the Earth
The class gets to practice being a mathematician in ancient Greece, performing geometric application problems in the way of Eratosthenes. After following the steps of the great mathematicians, they then compare the (surprisingly...
Curated OER
Geometry, Pi, and Ancient Civilizations
By working together, pairs of learners will complete a Pi webquest. Using the internet, they examine the ways people in the Ancient Civilizations of Egypt, Babylonia and Greece used Pi. To end the lesson plan, they review the concepts of...
Curated OER
Number Theory: The Sieve of Eratosthenes
In this number theory learning exercise, students read about The Sieve of Eratosthenes and follow a set of directions to complete a prime number activity and answer 4 related questions.
Curated OER
Coin Content
Students calculate ancient Greek coin values as compared to their weight, equivalence in grain, and determine their worth today. They explain how to calculate fractions of a given weight and how to use decimal numbers.
Curated OER
Prime and Composite Numbers
Sixth graders identify prime and composite numbers and complete an activity problem. Given a 100 chart, they follow directions to create a prime number chart. In groups, 6th graders play a "Prime Take Away" activity to reinforce prime...
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.
Curated OER
Duplicating Segments and Angles
Tenth graders investigate geometric construction. In this geometry lesson, 10th graders explore the procedure for copying an angle and a segment. The lesson emphasizes the difference between a sketch, a drawing, and a...
Curated OER
Coin Content
Young scholars calculate ancient Greek coin values as compared to their weight, and equivalence in grain. They then determine their worth today. They convert metric to U.S. customary weight systems.
Curated OER
Symmetry in Paper Airplanes
Young scholars explore symmetry. In this geometry and scientific inquiry lesson, students design paper airplanes with middle line symmetry, as well as right, obtuse, and acute angles. Young scholars measure the plane's angles...
Curated OER
Do You Have a Sinking Feeling
Students determine how marine archaeologists use historical and archaeological data to draw inferences about shipwrecks. Students plot the position of a shipwrecked vessel, and draw inferences about the shipwreck from artifacts that have...
Curated OER
Platonic Solids
Students identify different types of polygons. In this geometry lesson plan, students differentiate between convex and regular shapes. they identify the names of two and three-dimensional objects.