Illustrative Mathematics
Designs
A resource that makes for excellent group work as students explore the area and perimeter of different complex designs made up of squares and circles. The commentary gives a clear definition of perimeter, but suggests that group members...
California Polytechnic State University
Australian Geography Unit
At the heart of this resource is a beautifully detailed PowerPoint presentation (provided in PDF form) on the overall physical geography of Australia, basic facts about the country, Aboriginal history, and Australia culture and lifestyle.
BW Walch
Solving Linear Inequalities in Two Variables
Although graphing a linear inequality on the plane is but a few steps added onto the graphing of a linear equation, for many learners the logical leap is quite intimidating. This approachable PowerPoint presentation breaks graphing...
California Academy of Science
Discovering Rainforest Locations
How many rainforests are there, where are they, and do global factors effect their locations? These are great questions that have great answers. Children in grades four through eight use several different maps to determine why...
National Park Service
Aspect, Treeline, and Climate
Head to the treeline and beyond to examine how this feature of the landscape affects weather and climate, which gives scientists clues about its health. Class members' observations of photographs provide the data...
Curated OER
Bermuda Triangle
Young scholars explore what the Bermuda triangle is and the theories as to why it is so mysterious. In this mystery lesson students read and discuss the history and the mystery behind the Bermuda Triangle.