PBS
Pbs Learning Media: Arctic Ice Extent, 1999 2016
Scientists study sea ice extent closely because it influences global climate. Follow the decline in Arctic sea ice in this animation adapted from NASA showing the yearly maximum and minimum sea ice extents from 1999 to 2016. Resources...
ClassFlow
Class Flow: Plant and Animal Habitats
[Free Registration/Login Required] This lesson explains plant and animal habitats with brilliant pictures and photos. It also includes discussion and non-Activote questions.