Developmental Dyscalculia (DD) is a learning disorder affecting the ability to acquire school-level
arithmetic skills, affecting approximately 3-6% of individuals. Progress in understanding the root causes
of DD and how best to treat it have been impeded by lack of widespread research and variation in
characterizations of the disorder across studies. However, recent years have witnessed significant growth
in the field, and a growing body of behavioral and neuroimaging evidence now points to an underlying
deficit in the representation and processing of numerical magnitude information as a potential core
deficit in DD. An additional product of the recent progress in understanding DD is the resurgence of a
distinction between ‘primary’ and ‘secondary’ developmental dyscalculia. The first appears related to
impaired development of brain mechanisms for processing numerical magnitude information, while the
latter refers to mathematical deficits stemming from external factors such as poor teaching, low socioeconomic status, and behavioral attention problems or domain-general cognitive deficits. Increased
awareness of this distinction going forward, in combination with longitudinal empirical research, offers
great potential for deepening our understanding of the disorder and developing effective educational
interventions.

This guide is intended for the Fellows of the School Librarians Advancing STEM Learning project. It includes the tasks and timeline for the Fellows work, as well as links to resources and documents tied to the Fellowship role.

This guide covers the history of the Creative Commons, how and why it was established and what the CC licenses can do for creators and authors.

This text was adapted by Saylor Academy under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 License without attribution as requested by the work's original creator or licensor.

Saylor Academy would like to thank Andy Schmitz for his work in maintaining and improving the HTML versions of these textbooks. This textbook is adapted from his HTML version, and his project can be found here.

Publisher: Saylor Academy
Year Published: 2012

Welcome to Modern World History! This is the textbook for an undergraduate survey course taught at all the universities and most of the colleges in the Minnesota State system. Similar courses are taught at institutions around the United States and the world, so the authors have made the text available as an open educational resource that teachers and learners can read, adapt, and reuse to meet their needs. We’d like to hear from people who have found the text useful, and we’re always open to questions and suggestions.

Principles of Economics covers scope and sequence requirements for a two-semester introductory economics course. The authors take a balanced approach to micro- and macroeconomics, to both Keynesian and classical views, and to the theory and application of economics concepts. The text also includes many current examples, which are handled in a politically equitable way.

Principles of Macroeconomics 2e covers the scope and sequence of most introductory economics courses. The text includes many current examples, which are handled in a politically equitable way. The outcome is a balanced approach to the theory and application of economics concepts. The second edition has been thoroughly revised to increase clarity, update data and current event impacts, and incorporate the feedback from many reviewers and adopters.Changes made in Principles of Macroeconomics 2e are described in the preface and the transition guide to help instructors transition to the second edition.

The book is designed to accompany an introductory level general special education course: The Dynamic Role of the Special Educator.

World History: Cultures, States, and Societies to 1500 offers a comprehensive introduction to the history of humankind from prehistory to 1500. Authored by six USG faculty members with advance degrees in History, this textbook offers up-to-date original scholarship. It covers such cultures, states, and societies as Ancient Mesopotamia, Ancient Israel, Dynastic Egypt, India’s Classical Age, the Dynasties of China, Archaic Greece, the Roman Empire, Islam, Medieval Africa, the Americas, and the Khanates of Central Asia. It includes 350 high-quality images and maps, chronologies, and learning questions to help guide student learning. Its digital nature allows students to follow links to applicable sources and videos, expanding their educational experience beyond the textbook. It provides a new and free alternative to traditional textbooks, making World History an invaluable resource in our modern age of technology and advancement.