Khan Academy
Khan Academy: Create Rectangles With a Given Area
Practice finding the area of rectangles by counting unit square. Create rectangles with a given area by covering unit squares. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video...
Soft Schools
Soft Schools: Perimeter Quiz
Students take a quiz assessing knowledge of perimeter and units of perimeter. The quiz consists of eight questions, and a results summary is shown at the end.