Measuring the Size of the Earth part of Keyah Math:Activities
In this activity, students explore the method used by Eratosthenes to estimate the circumference of the earth. After engaging with the geometry and data Eratosthenes used, students compute the radius and volume of ...

Mass and Density of the Earth part of Keyah Math:Activities
This activity is intended as a follow-up to the Measuring the Size of the Earth and Measuring the Size of the Earth from Arizona activities. Students use data on the radius and volume of Earth, Newton's Law of ...

Measuring the Size of the Earth from Arizona part of Keyah Math:Activities
In this activity, students use the geometric method of Eratosthenes and geographic data from Arizona to estimate the circumference of the earth. The circumference is then used to compute the radius and volume of ...

Size, Mass, and Density of the Earth part of Keyah Math:Activities
This activity combines the exercises from several Kéyah Math activities in guiding students to use the mathematics of Eratosthenes and Newton with actual data, in order to compute the size, mass, and density of ...

Keyah Math Project part of Keyah Math
The Keyah Math Project has developed a series of versatile online activities in mathematical geoscience, using the natural and cultural landscapes of the Southwest United States as context and setting.

Find an Activity by Topic part of Keyah Math
Topic Menu: Brief descriptions of content based on math level. Scroll down the page to view the modules listed with their descriptions. Level 1 Math Level 2 Math Pre-algebra; arithmetic; substitution into formulas; ...

Activities part of Keyah Math
Activities Measuring the Size of the Earth Measuring the Size of the Earth from Arizona Size, Mass, and Density of the Earth Mass and Density of the Earth Layers of the Earth Ages of Rocks and the Earth ...

Contribute Activity part of Keyah Math
About YouAttribution Author Email Addresses (will not be displayed): Your Activity or AssignmentActivity/Assignment Title: Type of Activity Problem Set Classroom Activity Lab Activity Project Field Activity ...