Curated OER
Area-Time to Get in Shape
Students investigate the properties of triangles and parallelograms. In this geometry lesson, students calculate the formula used to find the are of a triangle and other polygons. They create a visual model to represent their findings.
Curated OER
Properties of Special Parallelograms
Students identify properties of trapezoids. In this geometry instructional activity, students are put into groups and use computer programs to analyze polygons. They drag and move the shapes around as they make predictions.