Curated OER
Finding the Sum of the Exterior and Interior Angles of a Polygon
Students find the sum of the angles of a polygon and construct a polygon given the number of sides. In this polygon lesson plan, students draw large polygons on the floor of the room. They measure the length of each side and the interior...
Florida State University
Florida State University: Molecular Expressions: Basic Concepts in Optical Microscopy
This site explores the microscope in great detail. Content includes a focus on the microscope's basic functions (including a general diagram), the history of the microscope, each feature of the microscope, differing objectives,...
PBS
Pbs Teachers: Whirlybirds [Pdf]
Predict and determine the frequency of an event and measure to the nearest centimeter while constructing whirlybirds in a simulation of a parachute jump competition.