Shape : Area Builder by PhET, Colorado University
This simulation allows pupils to explore the concepts of area and perimeter. There are two distinct modes to this game.
The first is great for exploring and teaching and allows squares to be dragged onto a grid and gives numerical values to both area and perimeter.
The second mode provides students with a set of challenges or puzzles to solve by setting targets for shapes with specific area and perimeter. It allows instant checking and feedback.
There are six levels of difficulty and most pupils will gain something about area and perimeter by using this simulation.
The higher levels encourage arriving at an area or perimeter by using calculations – an on screen calculator is provided.
This shape, area and perimeter project is created using HTML5 and as such will play on desktops and tablets equally well, including iPads.