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:

Funciones exponenciales y logarítmicas

M. Rosa Estela

OER Preview To the OER

Evaluación_Lección 22: Determinantes – Matriz Adjunta (0)

EngiMath Project

OER Preview To the OER

Mulitplikation & Division bei Brüchen

Eva Schirgi

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

Exercitii pentru Lectia 22: Adjugată și Matricea Inversă 22.3 Adjugată 3×3, prin cofactori (pas cu pas)

Authors

EngiMath

Educational level

Higher Education

Level

medium

Description

Exercitii pentru Lectia 22: Adjugată și Matricea Inversă 22.3 Adjugată 3×3, prin cofactori (pas cu pas)

Licence

CC-BY

Type

Quiz/Knowledge Control

Category

Linear algebra – Matrix calculus

Keywords

matrices, XML, tests, Romanian

Tags

EngiMath, matrices, XML, Moodle, Romanian

File
ENG-220-XML-RO.zip

Details

Updated: April 15, 2025 at 1:15 pm



Average rating

Title

Exercitii pentru Lectia 22: Adjugată și Matricea Inversă 22.4 Inversabilă Nu inversabilă 2×2

Authors

EngiMath

Educational level

Higher Education

Level

medium

Description

Exercitii pentru Lectia 22: Adjugată și Matricea Inversă 22.4 Inversabilă Nu inversabilă 2×2

Licence

CC-BY

Type

Quiz/Knowledge Control

Category

Linear algebra – Matrix calculus

Keywords

matrices, XML, tests, Romanian

Tags

EngiMath, matrices, XML, Moodle, Romanian

File
ENG-221-XML-RO.zip

Details

Updated: April 15, 2025 at 1:15 pm



Average rating

Title

14.02 Calculate the 2×2 Inverse step by step (possible) (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 – Matrix calculus

Keywords

Inverse of a Matrix, Elementary Operations

Tags

EngiMath, Gate2Math

File
ENG-183-XML-EN.zip

Details

Updated: April 15, 2025 at 10:56 am



Average rating

Title

Exercitii pentru Lectia 22: Adjugată și Matricea Inversă 22.5 Inversabilă Nu inversabilă 3×3

Authors

EngiMath

Educational level

Higher Education

Level

medium

Description

Exercitii pentru Lectia 22: Adjugată și Matricea Inversă 22.5 Inversabilă Nu inversabilă 3×3

Licence

CC-BY

Type

Quiz/Knowledge Control

Category

Linear algebra – Matrix calculus

Keywords

matrices, XML, tests, Romanian

Tags

EngiMath, matrices, XML, Moodle, Romanian

File
ENG-222-XML-RO.zip

Details

Updated: April 15, 2025 at 1:15 pm



Average rating

Title

Exercitii pentru Lectia 22: Adjugată și Matricea Inversă 22.6 Găsește x, nu inversabilă singulară 2×2

Authors

EngiMath

Educational level

Higher Education

Level

medium

Description

Exercitii pentru Lectia 22: Adjugată și Matricea Inversă 22.6 Găsește x, nu inversabilă singulară 2×2

Licence

CC-BY

Type

Quiz/Knowledge Control

Category

Linear algebra – Matrix calculus

Keywords

matrices, XML, tests, Romanian

Tags

EngiMath, matrices, XML, Moodle, Romanian

File
ENG-223-XML-RO.zip

Details

Updated: April 15, 2025 at 1:15 pm



Average rating

Title

Exercitii pentru Lectia 22: Adjugată și Matricea Inversă 22.7 Găsește x, nu inversabilă singulară 3×3

Authors

EngiMath

Educational level

Higher Education

Level

medium

Description

Exercitii pentru Lectia 22: Adjugată și Matricea Inversă 22.7 Găsește x, nu inversabilă singulară 3×3

Licence

CC-BY

Type

Quiz/Knowledge Control

Category

Linear algebra – Matrix calculus

Keywords

matrices, XML, tests, Romanian

Tags

EngiMath, matrices, XML, Moodle, Romanian

File
ENG-224-XML-RO.zip

Details

Updated: April 15, 2025 at 1:15 pm



Average rating

Title

14.03 Calculate the 2×2 Inverse step by step (impossible) (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 – Matrix calculus

Keywords

Inverse of a Matrix, Elementary Operations

Tags

EngiMath, Gate2Math

File
ENG-184-XML-EN.zip

Details

Updated: April 15, 2025 at 10:56 am



Average rating

Title

Exercitii pentru Lectia 22: Adjugată și Matricea Inversă 22.8 Inversă 2×2 (pas cu pas)

Authors

EngiMath

Educational level

Higher Education

Level

medium

Description

Exercitii pentru Lectia 22: Adjugată și Matricea Inversă 22.8 Inversă 2×2 (pas cu pas)

Licence

CC-BY

Type

Quiz/Knowledge Control

Category

Linear algebra – Matrix calculus

Keywords

matrices, XML, tests, Romanian

Tags

EngiMath, matrices, XML, Moodle, Romanian

File
ENG-225-XML-RO.zip

Details

Updated: April 15, 2025 at 1:15 pm



Average rating

Title

Exercitii pentru Lectia 22: Adjugată și Matricea Inversă 22.9 Inversă 3×3 (pas cu pas)

Authors

EngiMath

Educational level

Higher Education

Level

medium

Description

Exercitii pentru Lectia 22: Adjugată și Matricea Inversă 22.9 Inversă 3×3 (pas cu pas)

Licence

CC-BY

Type

Quiz/Knowledge Control

Category

Linear algebra – Matrix calculus

Keywords

matrices, XML, tests, Romanian

Tags

EngiMath, matrices, XML, Moodle, Romanian

File
ENG-226-XML-RO.zip

Details

Updated: April 15, 2025 at 1:15 pm



Average rating

Title

Exercitii pentru Lectia 21: Determinante – Proprietăți 4 21.1 Triangulară Superioară Inferioară, pas cu pas

Authors

EngiMath

Educational level

Higher Education

Level

medium

Description

Exercitii pentru Lectia 21: Determinante – Proprietăți 4 21.1 Triangulară Superioară Inferioară, pas cu pas

Licence

CC-BY

Type

Quiz/Knowledge Control

Category

Linear algebra – Matrix calculus

Keywords

matrices, XML, tests, Romanian

Tags

EngiMath, matrices, XML, Moodle, Romanian

File
ENG-227-XML-RO.zip

Details

Updated: April 15, 2025 at 1:15 pm



Average rating