Open Textbooks for Rural Arizona participants are invited to remix this template to share their courses, textbooks, and other OER material on our Hub.

Complete set of mobile friendly Intermediate Algebra sample exams with solutions. In addition, there are links to pdf versions and a sample final exam with answers.

Intermediate Algebra Basic algebraic concepts, including rational expressions, functions and their graphs, radicals, quadratics, and logarithms/exponentials.  Prerequisite: MAT 091 or placement beyond prerequisite. Four lecture.Course GoalsTo build student confidence in the use algebraic skills to expand and reinforce concepts previously learned, to have students develop a positive attitude toward mathematics and to build algebraic skills in the listed areas.

The lesson starts with a review of basic geometric terms.Angles are defined.There are four types of angles.A right angle measures 90° and forms a square corner. If you were to sit inside a right angle, you would be sitting straight up.An acute angle measures less than 90° and is open less than a right angle. Acute angles have a smaller measurement. Think of them as small and cute. =) If you were sitting inside an acute angle, you would be bent together like a 'V'.An obtuse angle measures more than 90° and is open more than a right angle. Obtuse angles have a larger measurement. If you were to sit inside a obtuse angle, you would be leaning back as if you were lounging in a beach chair by the pool.A straight angle measures exactly 180° and forms a straight line. If you were to sit inside a straight angle, you would actually have to lay down flat on your back.

Videos introducing negative integers and adding and subtracting them.

The shell of a syllabus that hopes to incorporate many antiracist practices, in statistics.

Psychology students often find statistics courses to be different from their other psychology classes. There are some distinct differences, especially involving study strategies for class success. The first difference is learning a new vocabulary—it is similar to learning a new language. Knowing the meaning of certain words will help as you are reading the material and working through the problems. Secondly, practice is critical for success; reading over the material is not enough. Statistics is a subject learned by doing, so make sure you work through any homework questions, chapter questions, and practice problems available. Lastly, we recommend that you ask questions and get help from your instructor when needed. Struggling with the course material can be frustrating, and frustration is your enemy. Often your instructor can get you back on track quickly.

Introduction to the Modeling and Analysis of Complex Systems introduces students to mathematical/computational modeling and analysis developed in the emerging interdisciplinary field of Complex Systems Science. Complex systems are systems made of a large number of microscopic components interacting with each other in nontrivial ways. Many real-world systems can be understood as complex systems, where critically important information resides in the relationships between the parts and not necessarily within the parts themselves. This textbook offers an accessible yet technically-oriented introduction to the modeling and analysis of complex systems. The topics covered include: fundamentals of modeling, basics of dynamical systems, discrete-time models, continuous-time models, bifurcations, chaos, cellular automata, continuous field models, static networks, dynamic networks, and agent-based models. Most of these topics are discussed in two chapters, one focusing on computational modeling and the other on mathematical analysis. This unique approach provides a comprehensive view of related concepts and techniques, and allows readers and instructors to flexibly choose relevant materials based on their objectives and needs. Python sample codes are provided for each modeling example.

Many GED/ESL students have a lapse in education.  As a result, the concept of fractions is a difficult task to teach to the adult learner. This OER will give the student the basic introduction to the concept of fractions.  Gaining confidence the student can move on to higher level mathematics.

Students will be given a product along with information necessary to determine the cost of the product after discounts, travel and time involved in making the purchase.  Students will then decided which option seems to be best based on where they place value; time, money, etc. 

An interactive applet and associated web page that demonstrate isosceles triangles (two sides the same length). The applet presents a triangle where the user can drag any vertex. As the vertex is dragged the others move automatically to keep the triangle isosceles. The angles are also updated continuously to show that the base angles are always congruent. Applet can be enlarged to full screen size for use with a classroom projector. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.

Caharkan waxa uu ku saabsan yahay Jajabyada dhafan, sida isku baddalka jajabyada iyo jajabyada dhafan, iyo xisaab falladooda.

Featured are lessons and activities designed to be done with guidance from a parent or teacher. Have your child engage in the activities below, and watch as they develop the fundamental skills necessary for elementary-level math.

In this lesson, students will choose a feature in the outdoor classroom to measure using a selected tool (tape, ruler, or yard/meter stick). They will sketch feature and label its dimensions.

Students will review and practice the concepts of least common multiples. This is a great tool to use for extra practice or review for a test.

In this lesson, students will develop fluency for splitting numbers into tens and ones by applying the concept to the concrete example of leaves on plants.

As a supplement to the OpenStax textbook, we have also created lesson summaries for our OER course. Attached are some instructor created notes on the following topics.Introduction to StatisticsSampling MethodsBias in SamplingOrganizing Data using Frequency Distributions and HistogramsMeasures of CenterMeasures of Dispersion and Empirical RuleMeasures of Position, Fences and Outliers5-Number Summary and Boxplots