He also drew upon insights into pedagogy in the writings of Mary Boole on mathematics education .
The Leapfrogs group of Tahta and Hemmings , together with David Sturgess , Leo Rogers and Derick Last also produced hands - on teaching materials including workbooks for the polycube .
Tahta also drew upon insights into pedagogy in the writings of Mary Boole on mathematics education .
The Leapfrogs group of Tahta and Hemmings , together with David Sturgess , Leo Rogers and Derick Last also produced hands - on teaching materials including workbooks for the polycube .