How I Use It
This app is kind of an edu-game. Players read a short exposition before looking at an image. After viewing the scene of the crime, they answer questions. These questions help users consider the evidence available in the picture. After considering the context and the clues, they are asked to solve the crime.
I would use this app as a launch to a unit on persuasion. I would emphasize the need to gather evidence. Like in the app, I will emphasize the need to gather information without favoring one side of the issue over another.
The app also demonstrates the need for context. Users need to look at the clues in the situation and to notice how everything fits together. Student-writers also need to notice the context of their research and to provide context for their audience.
Finally, concluding the game requires players to reach a judgment. In persuasive writing, students also use the facts to make a judgment.
The game is fun. The challenge of assembling the clues is interesting. The picture quality on the clues isn't very good, and some of the facts sound a little dated.
I think students would get into it, and a skilled teacher could help them make connections between the game and the argumentative writing process.
I used the $0.99 version, but the iTunes store also showed a free version. Either one would be a pretty good deal.