If you have, then the Royal Institution of Great Britain would like to hear from you.

Since 1981 the RI Masterclasses in Mathematics have been enriching school maths for 12 to 14 year-olds. Now the RI is for the first time undertaking an independent evaluation of the programme. "This is a very exciting opportunity," says Sara Santos, Clothworkers' Fellow in Mathematics at the RI, "We are seeking to further improve our already successful programme, even perhaps reshape it to challenge and enthuse our finest young minds."

If you have participated in any of the RI Mathematics Masterclasses for Young People (any time between 1981 and now), you can now record your memories and reflections in this on-line questionnaire. The questionnaire takes around 15 minutes to complete. "It might be a precious amount of time for you, but your feedback is invaluable for us," says Sara. "We are also trying to keep in touch with the Masterclasses community." To keep in touch, please visit the RI website, email the RI on maths@ri.ac.uk, or join the group RI Mathematics Masterclasses for Young People on Facebook .