(19)

(11)

EP 1 226 568 A1

(12)

(43) Date of publication: 31.07.2002 Bulletin 2002/31 (21) Application number: 00975272.6 (22) Date of filing: 16.10.2000

(51) International Patent Classification (IPC)7: G09B 3/00, G09B 7/00, G09B 19/00 (86) International application number: PCT/US0028/762 (87) International publication number: WO 0127/902 (19.04.2001 Gazette 2001/16)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV MK RO SI (30) Priority: 14.10.1999 US 159398 P (71) Applicants: Renaissance Learning, Inc. Wisconsin Rapids, WI 54494 (US) Zwart, Dale R. Littleton, CO 80128 (US)	(72) Inventor: ZWART, Dale, R. Littleton, CO 80128 (US) (74) Representative: Lawrence, John  Barker Brettell 138 Hagley RoadEdgbaston Birmingham B16 9PW Birmingham B16 9PW (GB)