Show budding mathematicans how to find the sine of pi over 12. The third lesson in a series of 16 introduces the addition and subtraction formulas for trigonometric functions. Class members derive the formulas using the distance...

In this computing determinants activity, learners explore methods of computing determinants. They complete determinant problems by using the co-factor method, the "big formula" and the use of product of the pivots. This two-page...

Students research various cultural and religious festivals celebrated and observed by Australians, describing common elements and identifying adaptations that have been made for life in Australia.

In this equilibria worksheet, students are given detailed information about LeChatelier's principle and how to solve equilibrium problems. They then calculate concentrations of compounds in solutions.

Eleventh graders study homogeneous linear systems. In this linear system of equations instructional activity, 11th graders write linear system solutions in parametric vector form. Students also identify the connection between linear...

Students watch a video about the rainforest and create a large wall mural of rainforest features. Students write a first person point of view article by an endangered rainforest animal and discuss logging.

Students, in groups, classify furniture, share their categories and rationales, then note how their different schemes vary, perfectly logical and useful, but completely arbitrary.

[Free Registration/Login may be required to access all resource tools.] This lesson covers adding and subtracting matrices with the same dimensions. Students can watch a video tutorial, explore guided notes and then attempt practice...

Students learn about matrix subtraction, matrix addition, and matrix equations. An assessment is included to check for comprehension of the concepts.

Find a quick, concise explanation of the three basic matrix row operations. Examples are given and clearly explained for each of the operations: switching rows, multiplying a row by a number and adding rows/multiples of rows.

Check out this algebra lesson that explains how to add and subtract matrices.

Find the matrix that is the result of the addition or subtraction of two given matrices. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Solve equations where the unknown is a matrix, by using matrix addition and subtraction. Students receive immediate feedback and have the opportunity to try questions repeatedly or receive hints.

When you're working on a problem with lots of numbers, as in economics, cryptography or 3D graphics, it helps to organize those numbers into a grid, or matrix. Bill Shillito shows us how to work with matrices, with tips for adding,...

Find a quick, concise explanation of how to add and subtract matrices. Step by step examples are included to help you understand how to find the sum or difference of matrices of the same dimensions.

Demonstrates how to add and subtract matrices, explains why the addition or subtraction sometimes can't be done, and gives an example of how matrix addition is used in homework problems.

Learn how to find the result of matrix addition and subtraction operations.

[Free Registration/Login Required] This lesson covers adding, subtracting matrices and equivalent matrices.

Presented in Spanish. Example problems and explanations of matrices and subtopics such as adding, subtracting, and multiplying matrices, and inverse matrices. Does provide some solutions.