The introduction of the concept of the variable represents a critical point in the arithmetic–algebraic transition. This concept is complex because it is used with different meanings in different situations. Its management depends on the particular way of using it in problem-solving. The aim of this paper was to analyse whether the notion of “unknown” interferes with the interpretation of the variable “in functional relation” and the kinds of languages used by the students in problem-solving. We also wanted to study the concept of the variable in the process of translation from algebraic language into natural language. We present two experimental studies. In the first one, we administered a questionnaire to 111 students aged 16–19 years. Drawing on the conclusions of this research we carried out the second study with two pairs of students aged 16–17 years.
- Sharing some thoughts about the process of settling down in Ann Arbor. #Sabbatical fulbright.no/grantee-experi… 1 month ago
- RT @velonews: Time trials can be a snooze, but the elite men’s ITT championship race was quite the opposite. velonews.com/2017/09/news/b… 1 month ago
- RT @UMichFootball: It’s GAME DAY! And we’re back home! #GoBlue https://t.co/2D0LrxW26l 2 months ago
- RT @UMichFootball: Tomorrow, the Wolverines return to The Big House. “You get chills.” #GoBlue https://t.co/syU3YHTUxn 2 months ago
- RT @SpringerEdu: Special Issue from ZDM! Digital Curricula in Mathematics Education. Interested? Check this out link.springer.com/journal/11858/… htt… 2 months ago