How to Be Brilliant at Mental ArithmeticBeryl Webber · First published 1997 · Latest edition 2012Open the Tome
How to Dazzle at Oral and Mental StartersBeryl Webber, Jean Haigh · First published 2002Open the Tome
How to Be Brilliant at Using a CalculatorBeryl Webber, Terry Barnes · First published 1994Open the Tome
Let's investigate handling dataBeryl Webber, B. Webber, J. Haigh, C. Saunderson · First published 1990Open the Tome
Let's investigatehandling data 2Beryl Webber, B. Webber, J. Haigh · First published 1990Open the Tome
Let's investigate patternsBeryl Webber, B. Webber, J. Haigh, R. Smith, C. Saunderson · First published 1989Open the Tome
Let's investigate shapes 3Beryl Webber, B. Webber, J. Haigh, R. Smith · First published 1988Open the Tome