30 Days of Continued Learning! Arithmetic for Beginners [Word Problem Mastery] Vol. 1 Sum and Difference Problems Vol. 2 Traveler Problems (1) Vol. 3 Traveler Problems (2) Vol. 4 Traveler Problems (3) Vol. 5 Passing Problems Vol. 6 River Current Problems Vol. 7 Ratio Problems Vol. 8 Multiple Problems Vol. 9 Profit and Loss Problems Vol. 10 Work Problems Vol. 11 Concentration Problems (1) Vol. 12 Concentration Problems (2) [Plane Geometry Mastery] Vol. 1 About Angles (1) Vol. 2 About Angles (2) Vol. 3 About Similar Figures (1) Vol. 4 About Similar Figures (2) Vol. 5 About the Area of Figures (1) Vol. 6 About the Area of Figures (2) Vol. 7 About the Movement of Figures (1) Vol. 8 About the Movement of Figures (2) This is a learning DVD by a cram school instructor. Recommended for children who are not good at the specialized arithmetic of junior high school entrance exams. It was very helpful because children can repeatedly watch the parts they couldn't understand just by attending cram school, at their own pace. It was easy to understand, and even parents learned from it. Only the DVD (with a hard case) is sold. There is no text, but problems are presented in the videos, so I think you can work on them thoroughly.