We have begun a new unit in math – Geometry!  Right now the big idea that we are working with is:  Many geometric properties and attributes are related to measurements.  Today we used Tangram pieces to draw a variety of angles. We measured the angles and then sorted them.  Our categories were: right-angle, acute-angle, obtuse-angle, and reflex-angle.  Students used their problem-solving skills to figure out how to measure a reflex angle with a protractor that only measures up to 180 degrees.