Koguma-kai Hitori Tokkun Series PYGLI Series by Mr. Kyo Ito Total of 38 books Most are new and unused. My older children attended classes for elementary school entrance exams, but due to my busy work schedule, my younger children studied at home. We had a fun time as a family, and they were successfully accepted. Purchased for the second or third time through. There are almost no creases. However, some books have been folded or damaged while stored on the children's bookshelf, so please understand. The contents are clean and there are no writings. The four books on the far left of the first photo have writings. The bottom three books in the second row from the left also have writings. These are good educational materials, so please make good use of them. Koguma-kai Hitori Tokkun Discovery of Regularity 33 Equal Division 35 One-to-Many Correspondence 36 Figure Division 1 37 Inverse Correspondence 39 Line Symmetry 42 Rotational Reasoning 44 Movement on a Map 47 Overlapping Figures 51 Overlapping Dot Figures 52 Rotational Figures 54 Scientific Common Sense 1 55 Scientific Common Sense 2 60 Descriptive Words 61 Conservation of Quantity 64 Understanding Units 67 Missing Parts 77 Action Words 91 Common Sense 2 92 Observation from Four Directions 2 99 Replacement 100 Reverse Thinking Comprehensive Number Problem Question Collection Reverse Thinking Question Collection Discovery of Regularity [Foundation of Sequence, Planting, and Square Calculations] Question Collection 2 Dot Figures 2 (with writings) 3 Dot Figures 3 (with writings) 93 Comprehensive Number Problems (with writings) 21 Observation from Four Directions 1 (with writings) PYGLI Series by Mr. Kyo Ito Ability Development Problem Collection 11 Building Block Problems 12 Number of Building Blocks 1 16 Sense of Seasons 25 Similar Figures 27 Origami Expansion 28 Odd One Out 17 Fairy Tales and Folk Tales (with writings) 33 Figure Composition and Decomposition (with writings) 36 Mirror Images (with writings) Thank you for viewing.