Many children with dyslexia have more or less serious difficulties with remembering and recalling arbitrary sequences, such as the letters of the alphabet, days of the week, months of the year, seasons, multiplication tables, and telephone numbers
You can draw up a little questionnaire suitable for the child’s age in order to examine sequencing abilities. This is quite easily tested by asking the child to recite the alphabet, either from the beginning or, for the older child, from a given letter or in reverse order. Similarly for days of the week, months of the year, and the seasons.
You can also ask what letter comes before or after a given letter, day, month. For older children: How do months relate to the seasons? What are the most important holidays in the year? You can also ask the child to recite the multiplication tables which have been taught.