This book is about research designs for projects that collect both qualitative and quantitative data, so that their combined strengths will accomplish more than would have been possible with any one method.

Taking a "bi-level" approach, this book gives readers a complete picture of focus groups with coverage of both the "how-to" and the why, and argues against there being any one right way to do the research.

Taking exemplar lessons as a starting point for developing subject knowledge, this book supports trainee and current teachers explore the theory behind them and shape lesson plans to effectively teach number in Primary School.