Practice additions and subtractions on your smart phone with Plus-Minus Trainer

Plus-Minus Trainer is a learning software enabling children practicing

additions and subtractions on a device running Android.

Multiple training modes are provided for this cause:

+ Online mode: Exercise written addition and subtraction. Tasks and

Solutions are retrieved and respectively saved from a web server,

located at https://schule.learninglab.tugraz.at/plusminus/.

Following modes do not need internet access. The difficulty of the

randomly generated tasks can be changed in the application's settings.

+ Plus-Minus mode: Solving of randomly generated written additions or

subtractions.

+ Speed mode: Solving of randomly generated calculations within a

timebox of 60 seconds including a high score list.

+ Tree mode: Solving of three randomly generated Calculations connected

by a calculation tree.

+ Analogy mode: Solving of similar tasks (e.g. 5+2 and 2+5)

+ Symbolic addition: Solving of simple inline additions with auxiliary

symbols.

+ Symbolic subtraction: Solving of simple inline subtractions with

auxiliary symbols.