Welcome to the Mathematics OER Smart Library! Our library offers a diverse range of materials—including videos, infographics, games, presentations, animations, and more—covering topics such as algebra, calculus, geometry, statistics, and probability. These resources are available in seven languages: English, Estonian, German, Portuguese, Romanian, Catalan, and Spanish. Additionally, our library includes materials accessible to visually impaired and color-blind individuals. These resources are designed to support educators, students, and researchers in secondary, vocational, and higher education institutions.

Random OERs:

Naturaallogaritm

Elena Safiulina

OER Preview To the OER

Hindamine 13: Maatriksi teisendamine ešelonvormiks (9)

EngiMath

OER Preview To the OER

Exercitii pentru Lectia 11: Alte Clasificări ale Matricilor Pătrate 11.5 Determină dacă matricea este involutivă

EngiMath

OER Preview To the OER

Total number of OERs published so far:

3621

To explore and utilize these materials, navigate through our categorized sections or use the search function to find specific OERs of interest.

Title

23.06 What is an System of Linear Equation? (10)

Authors

EngiMath Project

Educational level

Higher Education

Level

medium

Description

Group of Questions for Moodle on Matrices – Introduction, XML format
– ALL questions have feedback with STEP-by-STEP resolution. Note: It requires a Moodle platform to be inserted into the question bank and, eventually, a specific plugin/software may be necessary for its operation.

Licence

CC-BY

Type

Quiz/Knowledge Control

Category

Linear algebra – Linear systems

Keywords

Linear equation, Systems, Definition

Tags

EngiMath, Gate2Math

File
ENG-283-XML-EN.zip

Details

Updated: July 11, 2025 at 11:24 am



Average rating

Title

23.07 Number of Variables/Number of Equations (10)

Authors

EngiMath Project

Educational level

Higher Education

Level

medium

Description

Group of Questions for Moodle on Matrices – Introduction, XML format
– ALL questions have feedback with STEP-by-STEP resolution. Note: It requires a Moodle platform to be inserted into the question bank and, eventually, a specific plugin/software may be necessary for its operation.

Licence

CC-BY

Type

Quiz/Knowledge Control

Category

Linear algebra – Linear systems

Keywords

Linear equation, Systems, Variables

Tags

EngiMath, Gate2Math

File
ENG-284-XML-EN.zip

Details

Updated: July 11, 2025 at 11:24 am



Average rating

Title

23.08 Solution of the System of Linear Equation(10)

Authors

EngiMath Project

Educational level

Higher Education

Level

medium

Description

Group of Questions for Moodle on Matrices – Introduction, XML format
– ALL questions have feedback with STEP-by-STEP resolution. Note: It requires a Moodle platform to be inserted into the question bank and, eventually, a specific plugin/software may be necessary for its operation.

Licence

CC-BY

Type

Quiz/Knowledge Control

Category

Linear algebra – Linear systems

Keywords

Linear equation, Systems, Solution

Tags

EngiMath, Gate2Math

File
ENG-285-XML-EN.zip

Details

Updated: July 11, 2025 at 11:24 am



Average rating

Title

23.09 Check the solution (10)

Authors

EngiMath Project

Educational level

Higher Education

Level

medium

Description

Group of Questions for Moodle on Matrices – Introduction, XML format
– ALL questions have feedback with STEP-by-STEP resolution. Note: It requires a Moodle platform to be inserted into the question bank and, eventually, a specific plugin/software may be necessary for its operation.

Licence

CC-BY

Type

Quiz/Knowledge Control

Category

Linear algebra – Linear systems

Keywords

Linear equation, Systems, Solution

Tags

EngiMath, Gate2Math

File
ENG-286-XML-EN.zip

Details

Updated: July 11, 2025 at 2:51 pm



Average rating

Title

23.10 SEL: Geometric Solution (10)

Authors

EngiMath Project

Educational level

Higher Education

Level

medium

Description

Group of Questions for Moodle on Matrices – Introduction, XML format
– ALL questions have feedback with STEP-by-STEP resolution. Note: It requires a Moodle platform to be inserted into the question bank and, eventually, a specific plugin/software may be necessary for its operation.

Licence

CC-BY

Type

Quiz/Knowledge Control

Category

Linear algebra – Linear systems

Keywords

Linear equation, Systems, Solution, Geometric Solution

Tags

EngiMath, Gate2Math

File
ENG-287-XML-EN.zip

Details

Updated: July 11, 2025 at 2:51 pm



Average rating

Title

23.11 System of Linear Equations: A and B (10)

Authors

EngiMath Project

Educational level

Higher Education

Level

medium

Description

Group of Questions for Moodle on Matrices – Introduction, XML format
– ALL questions have feedback with STEP-by-STEP resolution. Note: It requires a Moodle platform to be inserted into the question bank and, eventually, a specific plugin/software may be necessary for its operation.

Licence

CC-BY

Type

Quiz/Knowledge Control

Category

Linear algebra – Linear systems

Keywords

Linear equation, Systems, System Matrix, Independent Terms

Tags

EngiMath, Gate2Math

File
ENG-288-XML-EN.zip

Details

Updated: July 11, 2025 at 2:51 pm



Average rating

Title

23.12 SLE: Augmented Matrix (10)

Authors

EngiMath Project

Educational level

Higher Education

Level

medium

Description

Group of Questions for Moodle on Matrices – Introduction, XML format
– ALL questions have feedback with STEP-by-STEP resolution. Note: It requires a Moodle platform to be inserted into the question bank and, eventually, a specific plugin/software may be necessary for its operation.

Licence

CC-BY

Type

Quiz/Knowledge Control

Category

Linear algebra – Linear systems

Keywords

Linear equation, Systems, System Matrix, Augmented Matrix, Complete Matrix

Tags

EngiMath, Gate2Math

File
ENG-289-XML-EN.zip

Details

Updated: July 11, 2025 at 2:51 pm



Average rating

Title

23.13 SLE: Inconsistent/Consistent with single or multiple solutions solutions (8)

Authors

EngiMath Project

Educational level

Higher Education

Level

medium

Description

Group of Questions for Moodle on Matrices – Introduction, XML format
– ALL questions have feedback with STEP-by-STEP resolution. Note: It requires a Moodle platform to be inserted into the question bank and, eventually, a specific plugin/software may be necessary for its operation.

Licence

CC-BY

Type

Quiz/Knowledge Control

Category

Linear algebra – Linear systems

Keywords

Systems of linear equations, Classification, Determined, Impossible, Indeterminate

Tags

EngiMath, Gate2Math

File
ENG-290-XML-EN.zip

Details

Updated: July 11, 2025 at 2:51 pm



Average rating

Title

23.14 Non-Homogeneous Systems (10)

Authors

EngiMath Project

Educational level

Higher Education

Level

medium

Description

Group of Questions for Moodle on Matrices – Introduction, XML format
– ALL questions have feedback with STEP-by-STEP resolution. Note: It requires a Moodle platform to be inserted into the question bank and, eventually, a specific plugin/software may be necessary for its operation.

Licence

CC-BY

Type

Quiz/Knowledge Control

Category

Linear algebra – Linear systems

Keywords

Systems of linear equations, Homogeneous Systems

Tags

EngiMath, Gate2Math

File
ENG-291-XML-EN.zip

Details

Updated: July 11, 2025 at 2:51 pm



Average rating

Title

23.15 Trivial Solution (10)

Authors

EngiMath Project

Educational level

Higher Education

Level

medium

Description

Group of Questions for Moodle on Matrices – Introduction, XML format
– ALL questions have feedback with STEP-by-STEP resolution. Note: It requires a Moodle platform to be inserted into the question bank and, eventually, a specific plugin/software may be necessary for its operation.

Licence

CC-BY

Type

Quiz/Knowledge Control

Category

Linear algebra – Linear systems

Keywords

Systems of linear equations, Homogeneous Systems, Null solution, Trivial solution

Tags

EngiMath, Gate2Math

File
ENG-292-XML-EN.zip

Details

Updated: July 11, 2025 at 11:24 am



Average rating