The extreme challenges of life in the polar regions require the animals who make their habitat there to make many adaptations. This unit explores the polar climate and how animals like reindeer, polar bears, penguins, sea life and even humans manage to survive there. It looks at the adaptations to physiological proceses, the environmental effects on diet, activity and fecundity, and contrasts the strategies of aquatic and land-based animals in surviving in this extreme habitat. This unit builds on and develops ideas from two other 'Animals at the extreme' units: The desert environment (S324_1) and Hibernation and torpor (S324_2).

Do you want to get more out of your reading? This unit is designed to develop the analytical skills you need for a more in-depth study of literary texts. You will learn about narrative events and perspectives, the setting of novels, types of characterisation and genre.

This is a free textbook geared towards college-level courses about dress and identity. The purpose of the book is to help students learn about dress, identity, and how these topics intersect with marginalized communities. Everyone interacts with different people in their day-to-day lives. Having a greater understanding of others can lead to a more equitable, just society. This textbook was created by Kelly L. Reddy-Best and funded by the Miller Open Education Mini-Grant Program at Iowa State University. Extra care and effort were involved to assure you have access to high-quality, affordable course materials. I am interested in your experience using these materials and welcome your feedback. If you find any issues or missing areas in this text or want to offer positive feedback email me at klrb@iastate.edu.

This is an introductory-level course designed for global post-secondary educators interested in learning more about open education, open educational resources (OER), and open educational practices (OEP). The purpose of the course is to increase awareness and use of OER as part of global teaching and learning, and to connect education communities with each other. Participation within the course discussion forums requires enrolment through the OpenLearn system and may enrich your learning experience through interactions. There will also be social media and blogging opportunities to connect through Twitter and other spaces that you choose.

Do fractions and decimals make you apprehensive about maths? Do you lack confidence in dealing with numbers? If so, then this unit is for you. The unit will explain the basics of working with positive and negative numbers and how to multiply and divide with fractions and decimals.

Scientific calculators are a wonderful invention, but they're only as good as the people who use them. If you often get an unexpected - or ridiculous - result when you press the"enter' button, this unit is for you. Learn how to do a calculation correctly and get the right answer every time.