＊Instant purchase welcome ＊Anonymous delivery ＊New, unused items ＊Bundle discount available★ ◼️Product Information #201 Is your child struggling with "geometry problems"? This is an educational tool set for arithmetic and mathematics that allows children to visually learn the structure of three-dimensional objects and their development diagrams, which are difficult to imagine in their heads, by actually assembling them. It is very useful for learning about three-dimensional shapes and surface area, which begins in the 5th grade of elementary school, as well as for tackling difficult problems in junior high school entrance exams. ★Review Example★ The instruction manual was in Chinese, but it didn't hinder the assembly of the three-dimensional objects and was helpful for studying. I'm glad I could buy this set at a low price!! 【Key Features of this Educational Material】 • Covers 8 types of basic solids: Includes all major solids such as cubes, rectangular solids, triangular prisms, cylinders, cones, and spheres. • "Development diagrams" are visible: You can create them by combining nets (development diagrams) and frames, so you can clearly see "which surface connects where." • Intuitively understand the surface area formula: The instruction manual also includes the calculation formulas for surface area, allowing you to learn theory and practice together. • Fun to assemble: It can be assembled like a puzzle, so you can get familiar with the shapes without feeling like you're studying. 【Set Contents】 • A set of frame parts for solid models • Development diagram sheets for each solid • Instruction manual (with illustrations, in Chinese, but easy to understand intuitively as diagrams and formulas are the main focus) Case size: 14 x 18 x 4 cm • Corresponding solids: Cube, rectangular solid, parallelepiped, triangular prism, tetrahedron, cylinder, cone, sphere ◼️Please Note◼️ ・Due to imported goods, there may be minor scratches, slight fraying, loose stitching, and errors in shape and size. Please understand this beforehand. ・We open the items in the bag once for inspection before shipping. ・The colors on the screen may appear different from the actual product. ・Please note that there may be slight errors due to amateur measurements. ・If there are any defective products, please contact us [before evaluation]. We will respond sincerely. ◼️About Shipping To provide it at a low price, we will ship it in simple packaging. It will be folded and shipped, so there may be creases or marks. Thank you for viewing!＾＾★ #Arithmetic #Mathematics #EducationalToy #JuniorHighSchoolEntranceExam #ThreeDimensionalShapes #DevelopmentDiagram #SurfaceArea #LearningMaterial #Montessori