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Tsurukame Portal / SciCirc

Math courses

Total 130 courses 714 lessons Browse without registering

Courses in this list use this structure

  1. Traveling problems Master How to Solve Meeting and Catch-Up Problems
  2. salt water concentration problems Let's Master Concentration, Amount of Salt, and Mixture Problems
  3. crane-and-turtle (tsurukame) problems Solve problems involving two different quantities using tables and equations
  4. Plane Figures (Area and Angles) Solve Problems on the Areas and Angles of Triangles, Quadrilaterals, and Circles
  5. Counting Problems (Junior High School Entrance Examination) Counting Techniques and the Basics of Permutations and Combinations
  6. Properties of Numbers Master Multiples, Divisors, and Prime Numbers
  7. Patterns Developing the ability to identify patterns in sequences and arrangements of geometric figures
  8. Ratio and Proportion Problems Mastering Word Problems Using Fractions and Ratios
  9. Profit and Loss Problems Master the relationship between cost price, list price, selling price, and profit margin.
  10. Concentration Problems Master Salt Water Concentration, Mixture, and Balance-Scale Diagrams
  11. Applications of Ratios Master Everything from the Basics of Ratios to Compound Ratios and Combining Ratios
  12. Sum and Difference Problems Finding quantities from the sum and difference of two amounts
  13. Distribution Problems Dividing quantities according to ratios or conditions
  14. Elimination Problems Finding prices from the quantities and total cost of two types of items
  15. Chain (Imozuru) Problems Finding all combinations of integers
  16. Work Rate Problems Finding the total number of days using the amount of work done per day
  17. Newton's Problems Solving the balance between continuously increasing quantities and consumption
  18. Difference Problems Finding quantities from the difference between surplus and shortage
  19. Surplus-and-Deficiency Problems Finding the number of people or items from two conditions
  20. Multiple Problems Finding quantities from the relationship between ratios before and after a change
  21. Unit Conversion for Speed Learn to convert between speed per hour, per minute, and per second, and applied problems using train length
  22. Average Speed and Applications of Travel Problems Learn the average speed of a round trip, meeting and catching-up problems, and travel problems around a pond
  23. Calculating Angles Calculate interior and exterior angles of triangles and polygons, angles formed by parallel lines, and angles in star shapes
  24. Transformations of Figures Learn translation, rotation, and reflection, the path traced by a rolling circle, and problems involving winding string
  25. Similarity and Scaling Learn conditions for similarity, the ratio of similarity and side lengths, and applied problems for finding shadow length
  26. Area Ratios Learn the relationship between the ratio of similarity and the ratio of areas (squared), the area ratio of triangles, and equal-area transformation
  27. Solid Figures (Volume and Surface Area) Calculate the volume and surface area of rectangular prisms, prisms, cylinders, and cones, and compound solids
  28. Cross-Sections of Solids Learn cross-sections of cubes, tofu-cutting problems, and calculating volume after cutting
  29. Changes in Water Depth Learn how water depth changes when filling a container, stepped containers, and problems involving moving water
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