This task focuses on a remarkable fact which comes out of the construction of the inscribed circle in a triangle: the angle bisectors of the three angles of triangle ABC all meet in a point.

These strategies support active student participation in math lessons and allow teachers to assess the developing proficiency levels of all students in the class by walking around to monitor student responses. These strategies are especially effective during the Mental Math part of an Everyday Mathematics lesson.

This is a set of three, one-page problems about the size and area of solar panels used to generate power. Learners will will use integer arithmetic to tally the number of hydrogen, oxygen and carbon atoms in a molecule and determine the number of methane atoms that can result. Options are presented so that students may learn about how NASA is using signs of methane gas to search for life on other planets, such as Mars, through a NASA press release or about how astrobiologists who are looking for life beyond Earth are using spectroscopy to identify methane plumes on Mars by viewing a NASA eClips video [7 min.]. This activity is part of the Space Math multi-media modules that integrate NASA press releases, NASA archival video, and mathematics problems targeted at specific math standards commonly encountered in middle school.

In this task students are asked to label negative numbers on a numberline and then answer questions about which are greater or less than.

This article discusses how the study of weather can meet the NCTM Data Analysis and Probability standard. Links to lessons for grades K-2 and 3-5 are provided.

In this video, we become familiar with integrals, both by understanding them as sums of areas under plots of functions, and by understanding them as anti-derivatives. We present the u-substitution rule, which is the analog of the chain rule for differentiating composite functions.

This is a set of interactive lecture demonstration questions designed to probe student understanding of single-slit diffraction.

An interactive applet and associated web page that demonstrate the relationship of the interior and exterior angles of a polygon. The applet shows an irregular polygon where one vertex is draggable. As it is dragged the interior and exterior angles at that vertex are displayed, and a formula is continuously updated showing that they are supplementary. The tricky part is when the vertex is dragged inside the polygon making it concave. The applet shows how the relationship still holds provided you get the signs of the angles right. 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.

Short Description:
The mathematics covered in this textbook are at an intermediate algebra level, building upon literacies covered in Mathematical Fundamental and Elementary Algebra.

Long Description:
This book has been adapted from an original work by Wallace: Elementary and Introductory Algebra.

Word Count: 107266

ISBN: 978-1-9991981-7-6

(Note: This resource's metadata has been created automatically by reformatting and/or combining the information that the author initially provided as part of a bulk import process.)

Short Description:
The mathematics covered in this textbook are at an intermediate algebra level, building upon literacies covered in Mathematical Fundamental and Elementary Algebra.

Long Description:
The mathematics covered in this textbook are at an intermediate algebra level, building upon literacies covered in Mathematical Fundamental and Elementary Algebra.

Word Count: 101314

ISBN: 978-1-77420-059-9

(Note: This resource's metadata has been created automatically by reformatting and/or combining the information that the author initially provided as part of a bulk import process.)

Intermediate Algebra Student Workbook, modified by De Anza College's Professor Doli Bambhania, is based upon Intermediate Algebra Student Workbook, Fourth Edition, 2014, by Scottsdale Community College. The included content is designed to lead students through Intermediate Algebra, from a functions modeling approach, and to develop a deep understanding of the concepts associated with functions, from mathematical, computational and applications perspectives. The workbook assumes the knowledge of prealgebra, as well as topics surrounding linear and quadratic functions. Access to a graphing calculator is assumed and the use of one is required for some of the lessons and practice problems.

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.

This is an activity about structures in space. Learners will construct two different types of trusses to develop an understanding of engineering design for truss structures and the role of shapes in the strength of structures. For optimum completion - this activity should span 3 class periods to allow the glue on the structures to dry. This is engineering activity 1 of 2 found in the ISS L.A.B.S. Educator Resource Guide.

This is an activity about keeping astronauts safe from debris in space. Learners will investigate the relationship between mass, speed, velocity, and kinetic energy in order to select the best material to be used on a space suit. They will apply an engineering design test procedure to determine impact strength of various materials. This is engineering activity 2 of 2 found in the ISS L.A.B.S. Educator Resource Guide.

This is an activity about using solar arrays to provide power to the space station. Learners will solve a scenario-based problem by calculating surface areas and determining the amount of power or electricity the solar arrays can create. This is mathematics activity 1 of 2 found in the ISS L.A.B.S. Educator Resource Guide.

This is an activity about the orbit of the ISS around the Earth. Leaners will investigate the relationship between speed, distance, and orbits as they investigate how quickly the ISS can travel to take a picture of an erupting volcano. This is mathematics activity 2 of 2 found in the ISS L.A.B.S. Educator Resource Guide.

In this interactive activity adapted from Annenberg Learner's Teaching Math Grades 6–8, explore some of the ways graphs can represent mathematical data contained in a story.

This division task asks studnets to consider the conceptual understanding of something usually taught as a rote procedure. To be successful with this task, students must make sense of the procedure and how place value is represented and abbreviated within it.

The purpose of this task is to help students learn to read information about a function from its graph, by asking them to show the part of the graph that exhibits a certain property of the function. The task could be used to further instruction on understanding functions, or as an assessment tool with the caveat that it requires some amount of creativity to decide how to best illustrate some of the statements.