Airlines Builder: pbskids.org/cyberchase/math-games/airlines-builder/
Area & Perimeter of Rectangles: www.mathplayground.com/area_perimeter.html
Perim-Bots: www.learnalberta.ca/content/me3us/flash/lessonLauncher.html?lesson=lessons/12/m3_12_00_x.swf
Area Blocks: www.mathplayground.com/area_blocks.html
Shape Surveyor: www.funbrain.com/games/shape-surveyor
Area & Perimeter of Rectangles: www.mathplayground.com/area_perimeter.html
Perim-Bots: www.learnalberta.ca/content/me3us/flash/lessonLauncher.html?lesson=lessons/12/m3_12_00_x.swf
Area Blocks: www.mathplayground.com/area_blocks.html
Shape Surveyor: www.funbrain.com/games/shape-surveyor