Publication Date
| In 2025 | 2 |
Descriptor
Publication Type
| Journal Articles | 2 |
| Reports - Descriptive | 1 |
| Reports - Research | 1 |
Education Level
| Elementary Education | 1 |
| Grade 6 | 1 |
| Intermediate Grades | 1 |
| Middle Schools | 1 |
Audience
Location
| Turkey | 1 |
| United States | 1 |
Laws, Policies, & Programs
Assessments and Surveys
What Works Clearinghouse Rating
Peer reviewed
Direct linkF. M. S. Lima – International Journal of Mathematical Education in Science and Technology, 2025
In this short note I present an elementary proof of irrationality for the number "e," the base of the natural logarithm. It is simpler than other known proofs as it does not use comparisons with geometric series, nor Beukers' integrals, and it does not assume that "e" is a rational number from the beginning.
Descriptors: Mathematical Logic, Number Concepts, Geometry, Equations (Mathematics)
Bhesh Mainali; Ali Sabri Ipek – International Journal for Mathematics Teaching and Learning, 2025
Textbook is one of the most tangible resources for teaching and learning mathematics, offering valuable opportunities for both teachers and students. This study compared the mathematical tasks in 6th-grade textbooks from the United States and Turkey, focusing on three dimensions of the tasks: representation, contextual features, and cognitive…
Descriptors: Foreign Countries, Mathematics Instruction, Textbooks, Textbook Content
