TY - BOOK AU - BOLT,Brian TI - Mathematical activities : A Resource Book for Teachers SN - 0521285186 (pbk.) U1 - 510 PY - 1982/// CY - Cambridge [Cambridgeshire], New York PB - Cambridge University Press KW - Mathematics KW - Mathematics--Study and teaching KW - Teaching--Aids and devices KW - Mathematical recreations UR - http://www.loc.gov/catdir/enhancements/fy0803/81012288-d.html ER -