階段式で学ぶ数学問題集
The Stair-Step Approach in Mathematics
Problem Books in Mathematics
Sedrakyan, Hayk
Sedrakyan, Nairi
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This book is intended as a teacher's manual and as an independent-study handbook for students and mathematical competitors. Based on a traditional teaching philosophy and a non-traditional writing approach (the stair-step method), this book consists of 735 new problems with solutions created by the authors.