?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=Dylan&rft.au=Wiliam%2C+Dylan&rft.aulast=Wiliam&rft.pages=19-22&rft.volume=6&rft.title=Equals%3A+Mathematics+and+Special+Educational+Needs&rft.atitle=Formative+Assessment+in+Mathematics+Part+3%3A+The+Learner%E2%80%99s+Role&rft.issue=1&rft.date=2000&rft.genre=article