The site includes three dozen different simulations, which include ʺSound & Wavesʺ, ʺHeat & Thermoʺ, and ʺLight & Raditionʺ (University of Colorado, USA 2012-20).

Other features at this site include links to current international trade news stories, a site devoted to the issue of fairness in international trade, opinion articles, and much more (USA 2009).

The primary sections of the site include ʺStudent Activitiesʺ, ʺTeacher Resourcesʺ, and ʺPublicationsʺ (2008-20).

These resources include videos on Constitution, The Congress, The Presidency, The Courts as well as games, lesson plans and a Constitution Guide (USA 2015-19)

Resources include classroom activities, course descriptions and syllabi, information about pedagogical strategies, topical collections, and more (USA 2014-20).

Created by Geology.com, the site’s materials are organized into nine thematic areas. These areas include ”Volcanoes”, ”Water”, ”Weather”, ”Erosion”, and ”Plate Tectonics” (2011).

ʺThese multimedia exercises include video, teacher audio to help you with difficulties, pictures to give meaning, and the quizzes themselves.ʺ Quelle: Anbieter (2021)

Annenberg Learner provides free content and resources for educators and students. Search classroom resources by grade levels and subject areas. Some video resources also include coordinated online materials, such as user guides, downloadable textbooks, labs and interactives, and more (USA 2020).

Created by Geology.com, the materials are organized into nine thematic areas. These areas include ʺVolcanoesʺ, ʺWaterʺ, ʺWeatherʺ, ʺErosionʺ, and ʺPlate Tectonicsʺ (USA 2011-19).

These resources, which include illustrated essays, videos, and interactive activities, help learners understand how scientists can use models to understand natural phenomena and create public policy (USA: Genetic Science Learning Center at the University of Utah 2018).