Measuring Angles - a demonstration

Area and Perimeter on a Geoboard

Interactive Geoboard

Measuring Perimeter - with Adam Ant

Perimeter of a Square - interactive calculations

Perimeter of a Rectangle - interactive calculations

Comparing Rectangles and Parallelograms

Congruent Polygons and Transformations

Transformations - Dilation

Transformations - Reflection

Transformations -Rotation

Transformations -Translation

Reflections and Translations

How long can the sides of a triangle be?

Area and Perimeter of a Triangle

Area of Polygons - demonstrations, formulas, and a comparison to perimeter

Area and Circumference of Circles

Tessellations