Abstract: A method for the computer-assisted learning of orthography, the method includes executing by a data processing system the steps of retrieving a main set of words from a data storage; retrieving an error data set associated with said main set of words from the data storage and repeatedly executing the steps of selecting a word to prompt the user with, by computing, for each word from the error data set, a statistic measure related to the probability of an error occurring in the word, and selecting the word which has the maximum value of the statistic measure; prompting the user with the word; accepting a user input specifying a sequence of symbols; comparing the user input with the word and updating and storing the error data set.

Abstract: A method for the computer-assisted learning of orthography, the method includes executing the following steps by a data processing system: retrieving a main set of words from a data storage; retrieving an error data set associated with said main set of words from the data storage; repeatedly executing the following steps: selecting a word to prompt the user with, by computing, for each word from the error data set, a statistic measure related to the probability of an error occurring in the word, and selecting the word which has the maximum value of the statistic measure; prompting the user with the word; accepting a user input specifying a sequence of symbols; comparing the user input with the word; updating and storing the error data set.

Abstract: A method of presenting training materials for training users with developmental dyscalculia or related learning difficulties includes determining a number or a numerical expression to present as part of training the user in developing internal maps to assist with overcoming a learning difficulty, whereby the user can increase a tendency to establish an internal neurological representation of numbers and numerical expression, wherein a numerical expression is a sequence of at least one number and at least one mathematical operator, generating a representation in a virtual space of an arrangement of numbers, including a number line and a representation of the number or the numerical expression, taking into account a resolution of the computer-controlled display that is to be used, and presenting to the user, using the computer-controlled display, a view of the virtual space showing the number line and the representation of the number or the numerical expression.

Abstract: A method encodes a word or words. A sequential input string of symbols representing a word or a plurality of words is parsed into segments. A graph is constructed having spatial levels, each level including nodes. The segments of the input string are mapped to the nodes according to the levels and attributes are assigned to the nodes according to the segments, where an entropy of the word or plurality of words is a constant times an entropy of the graph and of the nodal attributes.

Abstract: A method for the computer-assisted learning of orthography, the method includes executing the following steps by a data processing system: retrieving (11) a main set of words from a data storage; retrieving (12) an error data set associated with said main set of words from the data storage; repeatedly executing the following steps: selecting (13) a word to prompt the user with, by computing, for each word from the error data set, a statistic measure related to the probability of an error occurring in the word, and selecting the word which has the maximum value of the statistic measure; prompting (14) the user with the word; accepting (15) a user input specifying a sequence of symbols; comparing (16) the user input with the word; updating (17, 18) and storing the error data set.