HawkCount is a web-based database that facilitates the tracking and reporting of raptor migrations. It includes site reports from over a hundred hawk-watch sites in Mexico, the United States, and Canada. The sites, which are maintained by members of the Hawk Migration Association of North America (HMANA), report their daily raptor counts to HawkCount. An […]

Investigations in Number, Data, and Space is a complete K-5 mathematics curriculum designed to help elementary school children understand the fundamental ideas of number and operations, geometry, data, measurement and early algebra. It was developed in the 1990s at TERC, an education research and development organization in Cambridge, Massachusetts, and is now widely […]