Snow Melt and Stream Flow in the Animas River (Advanced) part of Keyah Math:Activities
This activity consists of a set of problems in which students explore the contributions of water from rainfall and snowmelt over the watershed of the Animas River in southwestern Colorado. Students first compute ...

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 ...

Stream Flow in the Animas River part of Keyah Math:Activities
This activity consists of a set of problems in which students explore a simplified method for predicting streamflow in the Animas River in southwestern Colorado. Students first compute the area of the watershed ...