| title | ISBN-13 | year of publication |
|---|---|---|
| 本質の解法数学III・C〈行列・曲線〉―Core & block honshitsunokaihousuugakuIII・C〈gyouretsu・kyokusen〉―Core & block | 978-4-01-033216-0 | 2005 |
| 本質の解法数学II・B〈数列・ベクトル〉―Core & block honshitsunokaihousuugakuII・B〈suuretsu・bekutoru〉―Core & block | 978-4-01-033215-3 | 2004 |
| 本質の解法数学I・A―Core & block honshitsunokaihousuugakuI・A―Core & block | 978-4-01-033214-6 | 2003 |
| 高校入試30日間完全攻略数学 (Obunsha study bear) koukounyuushi30kakan/ | 978-4-01-021113-7 | 2002 |