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:

21.02 Arvuta det(A)+/-det(B) (STACK) (2)

EngiMath

OER Preview To the OER

Exercitii pentru Lectia 14: Inversa unei Matrici prin Operații Elementare 14.3 Găsește inversa 2×2 (pas cu pas, imposibil)

EngiMath

OER Preview To the OER

LECȚIA 01 – Introducere în matrici 1.3_1 Alege o matrice de o anumita dimensiune (extensive form)_numbers only

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

25.12 Number of solutions of a system if Delta=0 (1)

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, System Determinant, Cramer

Tags

EngiMath, Gate2Math

File
ENG-312-XML-EN-1.zip

Details

Updated: July 11, 2025 at 7:55 pm



Average rating

Title

26.01 Augmented matrix 3×3 (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, Augmented System Matrix, Complete Matrix

Tags

EngiMath, Gate2Math

File
ENG-313-XML-EN-1.zip

Details

Updated: July 13, 2025 at 8:09 pm



Average rating

Title

26.02 Augmented Matrix vs 3×3 System (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, Augmented System Matrix, Complete Matrix

Tags

EngiMath, Gate2Math

File
ENG-314-XML-EN.zip

Details

Updated: July 13, 2025 at 8:09 pm



Average rating

Title

26.03 Choice of operations on lines (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, Augmented System Matrix, Complete Matrix

Tags

EngiMath, Gate2Math

File
ENG-315-XML-EN.zip

Details

Updated: July 13, 2025 at 8:09 pm



Average rating

Title

26.04 Calculate, using OELs (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, Augmented System Matrix, Complete Matrix

Tags

EngiMath, Gate2Math

File
ENG-316-XML-EN.zip

Details

Updated: July 13, 2025 at 8:09 pm



Average rating

Title

26.05 Gauss method 3×3 (partial) (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, Augmented System Matrix, Complete Matrix

Tags

EngiMath, Gate2Math

File
ENG-317-XML-EN.zip

Details

Updated: July 13, 2025 at 8:09 pm



Average rating

Title

26.06 4×4 Gauss method (partial) (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, Augmented System Matrix, Complete Matrix

Tags

EngiMath, Gate2Math

File
ENG-318-XML-EN.zip

Details

Updated: July 13, 2025 at 8:09 pm



Average rating

Title

26.07 2×2 Calculate x (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, Augmented System Matrix, Complete Matrix

Tags

EngiMath, Gate2Math

File
ENG-319-XML-EN.zip

Details

Updated: July 13, 2025 at 8:10 pm



Average rating

Title

26.08 3×3 Calculate x and y (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, Augmented System Matrix, Complete Matrix

Tags

EngiMath, Gate2Math

File
ENG-320-XML-EN.zip

Details

Updated: July 13, 2025 at 8:10 pm



Average rating

Title

26.09 4×4 Calculate y and z (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, Augmented System Matrix, Complete Matrix

Tags

EngiMath, Gate2Math

File
ENG-321-XML-EN.zip

Details

Updated: July 13, 2025 at 8:09 pm



Average rating