Opportunities to learn related to the use of quantitative reasoning to solve higher-order real-world applications that reflect the messy nature of the world are scarce and vary across countries. Those experiences are essential to the development of quantitative literacy. This literacy, like that related to language, is critical for all children.…

Textbooks play an important role in teachers' instructional decisions (Jones & Tarr, 2007), which consequently affects students' learning. This paper reports on a comparison of the elementary mathematics textbooks used in Iran and the United States, the Go-Math textbook. I analyzed topic sequences, frequency of the tasks, and cognitive demands…

The purpose of this study is to examine how proportional reasoning is introduced and developed in two widely used U.S. and Korean mathematics textbooks for grades 6-7. Seven research-based frameworks that identify student learning opportunities for understanding of proportional reasoning were used to analyze the textbooks. The results showed that…

Decision-making has been identified as one of the most important skillsets in sexual health. This exploratory qualitative study explored how US middle and high school textbooks integrate the recommended sexual health decision-making skills recommended by Future of Sex Education (FOSE), a collaboration of organisations in the USA supporting…

Visual images are widely used in science textbooks to facilitate the understanding of abstract concept of light. This study aims to compare and analyze elementary school textbooks from Korea, the United States, and Japan, focusing on how visual images are utilized to effectively convey light-related content. The findings reveal that all three…

Despite the central role of proofs in mathematics, research often shows that school textbooks offer limited support for the teaching and learning of proof-related reasoning. This study contributes to this field of research by studying Swedish and Finnish upper secondary textbooks on logarithms and combinatorics. Justifications in expository…

Phylogenetic trees are important tools for teaching and understanding evolution, yet students struggle to read and interpret them correctly. In this study, we extend a study conducted by Catley and Novick (2008) by investigating depictions of evolutionary trees in US textbooks. We investigated 1197 diagrams from 11 German and 11 United States…

The purpose of this critical review is to explore international perspectives on the analysis of the content of developed mathematics textbooks. This led us to explore the contributions to our knowledge of the compatibility of the content of the developed mathematics textbooks in the Kingdom of Saudi Arabia (KSA) with the standards of the National…

This study investigates the inclusion of health education concepts in biology textbooks in the United States of America and Singapore. It employs a content analysis methodology to examine biology textbooks, considering the theme as a unit and dividing health concepts into four main fields. The findings for both countries indicate that the field of…

The United States and Brazil were the two largest slave societies in the history of New World slavery, and the legacies of that history remain salient in both nations. Slavery and the slave trade are important topics to be taught in history courses, and future generations need to be given accurate information about the history and legacies of…

Researchers have been interested in students' transition to calculus since the early 1900s. One line of inquiry highlights students' understandings of high school mathematics as impeding or supporting their successful transition to university mathematics. This paper addresses an underlying question in this line of inquiry: does school mathematics…

This study compared area lessons from Korean textbooks and US standard-based textbooks to understand differences and similarities among these textbooks, as well as how these textbooks address known learning challenges in area measurement. Several well-known challenges have been identified in previous studies, such as covering, array structure, and…

Like all school textbooks, geography textbooks are authored. Almost all textbook research in and beyond geography has neglected their authors. This questionnaire-based multinational research project investigated the perceptions of 71 primary and secondary school geography textbook authors from seven countries in five continents. Though not…

In this research, it is discussed how migration and immigrant issues were examined in a comparative way in textbooks in Turkey and the United States. For this purpose, Life Studies and Social Studies textbooks of both countries were determined and of how migration and immigrants in terms were handled comparatively in these books. This research is…

Developing textbooks of optimal quality is crucial for enriching the students' learning and understanding. This study examined fraction addition and subtraction problems in the U.S. and South Korean mathematics textbooks according to the types of denominators. In particular, we investigated Everyday Mathematics (EM) and South Korean mathematics…