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:

Calcul Diferential și Integral – Test grilă 11

Bocanet Vlad, Serdean Florina

OER Preview To the OER

18.08 det(kA) (STACK)_1 (2)

EngiMath Project

OER Preview To the OER

03.9 Matriu Identitat (V/F) (10)

EngiMath Project

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

21.05 Determine the det(Inverse) (simple STACK 1) (2)

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

Determinant, Inverse

Tags

EngiMath, Gate2Math

File
ENG-261-XML-EN.zip

Details

Updated: July 11, 2025 at 3:23 pm



Average rating

Title

21.08 det(A*B^{-1}) (STACK) (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 – Matrix calculus

Keywords

Determinant, Inverse

Tags

EngiMath, Gate2Math

File
ENG-264-XML-EN.zip

Details

Updated: July 11, 2025 at 3:23 pm



Average rating

Title

21.09 det(kA*B^{-1}) (STACK) (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 – Matrix calculus

Keywords

Determinant, Inverse

Tags

EngiMath, Gate2Math

File
ENG-265-XML-EN.zip

Details

Updated: July 11, 2025 at 3:23 pm



Average rating

Title

21.10 det(A*kB^{-1}) (STACK) (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 – Matrix calculus

Keywords

Determinant, Inverse

Tags

EngiMath, Gate2Math

File
ENG-266-XML-EN.zip

Details

Updated: July 11, 2025 at 3:23 pm



Average rating

Title

22.01 Adjoint 2×2 through AC (step-by-step) (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

Adjoint Matrix, Square Matrix

Tags

EngiMath, Gate2Math

File
ENG-267-XML-EN.zip

Details

Updated: July 11, 2025 at 3:23 pm



Average rating

Title

22.02 Deputy 2×2 – Choice (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

Adjoint Matrix, Square Matrix

Tags

EngiMath, Gate2Math

File
ENG-268-XML-EN.zip

Details

Updated: July 11, 2025 at 3:23 pm



Average rating

Title

22.03 Adjunct 3×3 through AC (step-by-step) (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

Adjoint Matrix, Square Matrix

Tags

EngiMath, Gate2Math

File
ENG-269-XML-EN.zip

Details

Updated: July 11, 2025 at 3:23 pm



Average rating

Title

22.04 Invertible/Non-Invertible 2×2 (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, Determinant, Regular, Singular, Invertible Matrix

Tags

EngiMath, Gate2Math

File
ENG-270-XML-EN.zip

Details

Updated: July 11, 2025 at 3:23 pm



Average rating

Title

22.05 Invertible/Non-Invertible 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 – Matrix calculus

Keywords

Inverse, Determinant, Regular, Singular, Invertible Matrix

Tags

EngiMath, Gate2Math

File
ENG-271-XML-EN.zip

Details

Updated: July 11, 2025 at 3:23 pm



Average rating

Title

22.06 Determine x, Non-invertible/singular 2×2 (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, Determinant, Regular, Singular, Invertible Matrix

Tags

EngiMath, Gate2Math

File
ENG-272-XML-EN.zip

Details

Updated: July 11, 2025 at 3:22 pm



Average rating