Teachers of a variety of subjects and grade levels who would like to incorporate maps into their classroom activities may want to check out Esri's GeoInquiries, a collection of short, standards-based inquiry activities for teaching map-based content found in commonly used textbooks. Here, visitors will find a library of activities organized by topic, with each topic containing 15-20 different activities. For example, the American Literature section offers activities to enhance students' understanding of books such as The Great Gatsby and Into the Wild, while the Mathematics section offers a range of geometry and beginning algebra activities. GeoInquiries also covers topics such as Earth Science, Government, and World Geography. Each GeoInquiry activity includes a teachers' guide in PDF format, an interactive webmap, and an optional worksheet for students. Most activities are Level 1, which are "activities that teach standards-based content without a login to or installation of ArcGIS Online." Some topics also offer Level 2 activities that use ArcGIS Online analysis tools. Those new to using GeoInquiries should be sure to read through the guide Getting to Know GeoInquiries, which is linked in the introductory paragraph on the collection's main page.