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:

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OER Preview To the OER

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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

25.03 2×2 Det and Det_y/ Det and D_x/ D_x and D_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, System Determinant, Cramer

Tags

EngiMath, Gate2Math

File
ENG-303-XML-EN.zip

Details

Updated: July 11, 2025 at 7:55 pm



Average rating

Title

25.04 3×3 D_x/D_y/D_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, System Determinant, Cramer

Tags

EngiMath, Gate2Math

File
ENG-304-XML-EN.zip

Details

Updated: July 11, 2025 at 7:55 pm



Average rating

Title

25.05 4×4 D_x/D_y/D_z/D_w (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, System Determinant, Cramer

Tags

EngiMath, Gate2Math

File
ENG-305-XML-EN.zip

Details

Updated: July 11, 2025 at 7:55 pm



Average rating

Title

25.06 Calculate x/y, 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 – Linear systems

Keywords

Systems of linear equations, System Determinant, Cramer

Tags

EngiMath, Gate2Math

File
ENG-306-XML-EN.zip

Details

Updated: July 11, 2025 at 7:55 pm



Average rating

Title

25.07 Complete solution with formula, 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 – Linear systems

Keywords

Systems of linear equations, System Determinant, Cramer

Tags

EngiMath, Gate2Math

File
ENG-307-XML-EN.zip

Details

Updated: July 11, 2025 at 7:55 pm



Average rating

Title

25.08 Complete solution without formula, 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 – Linear systems

Keywords

Systems of linear equations, System Determinant, Cramer

Tags

EngiMath, Gate2Math

File
ENG-308-XML-EN.zip

Details

Updated: July 11, 2025 at 7:56 pm



Average rating

Title

25.09 Calculate x/y/z (x_1/x_2/x_3), 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, System Determinant, Cramer

Tags

EngiMath, Gate2Math

File
ENG-309-XML-EN.zip

Details

Updated: July 11, 2025 at 7:56 pm



Average rating

Title

25.10 Complete solution with formula, 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, System Determinant, Cramer

Tags

EngiMath, Gate2Math

File
ENG-310-XML-EN.zip

Details

Updated: July 11, 2025 at 7:56 pm



Average rating

Title

25.11 Complete Solution without formula, 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, System Determinant, Cramer

Tags

EngiMath, Gate2Math

File
ENG-311-XML-EN.zip

Details

Updated: July 11, 2025 at 7:56 pm



Average rating

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.zip

Details

Updated: July 11, 2025 at 7:55 pm



Average rating