[Junior High School Entrance Exam] The area of a light bulb's shadow can be solved with just one "magnification ratio" | 3 patterns that frequently appear in entrance exams

Last time, I explained shadow problems using three rules involving "drawing one line of light." Among shadow problems, the one where students' hands most often stop moving is "area." So, this time, I ...

[4th Grade Math] Free App for Students Struggling with Rectangular Prisms and Cubes: "3D Lab: Create, Rotate, and Verify" (Stumbling Block Unit App Series, Part 5)

IntroductionThis is the fifth installment in a series introducing practice apps for units where 4th-grade math students often ...