The base of all mathematical competences is a good understanding of numbers. Thereby, it is decisive that a child develops a notion for a set for numbers. For this purpose, Wendi provides exercises with a (quasi)simultaneous recording of numbers within the range of 6, 10 and 20 key fields and, based on this, exercises on addition und subtraction. The fundamental working equipment are virtual platelets, which are optionally provided with or without structured ten- oder twenty key fields. Available are four playful forms of exercise:
lightning view: quantitative recording of numbers without counting
Addition tasks with visualisation
Subtraction tasks with visualisation
Plus- and minus tasks, combined.
Although the app Wendi has been originally developed especially for children with arithmetic difficulties, it can clearly contribute to a deeper mathemathical understanding of numbers in regular lessons. Further, it can especially be recommendend because of it’s visual evidence and feedback functions within the tasks. Noteworthy are the proven mathemathical illustration supports in the form of structured ranges of 10 and 20 key fields, and the successful implementation within the specific possibilities of the tablet.