The Siemens Stiftung Media Portal

Looking for high-quality teaching material?

The Media Portal offers more than 4,000 open educational resources to help teachers provide a diverse, real-world-oriented classroom experience. Whether it’s mathematics, biology, computer science, physics, or chemistry: Here you’ll find a large selection of free digital teaching materials – from worksheets to content packages for interactive whiteboards to exciting educational games. Are you using methods such as inquiry-based learning, inclusive learning or Service-Learning? Our Media Portal has lots of information and materials on this as well.

The Media Portal and the materials are available in English, German, and Spanish.


The latest events, links to interesting portals, news from the OER community, and recent insights into the use of digital media in the classroom.

Upcoming events

Teaching from home and homeschooling

School closures are very challenging for all of you. In addition to the about 4,000 OER for STEM lessons, the Media Portal offers useful functions that can support you in networked teaching and learning with your students and their parents. Have a look to the most important ones here.

COVID-19! How can I protect myself and others?

The Smithsonian Science Education Center has developed a new rapid-response guide for youth ages 8–17. The guide, which is based on the UN Sustainable Development Goals, aims to help young people understand the science and social science of COVID-19 as well as help them take actions to keep themselves, their families and communities safe.

Informative COVID-19 song from Tanzania

In his song "Corona" Tanzanian musician Timamu highlights how everyone can help fight the spread of Corona. Creatively he emphasizes the importance of personal hygiene and seeking medical help when experiencing any symptoms.

Comic strip from Welthungerhilfe: No chance for corona

Amina and her friends are stuck at home. Instead of playing together outside or going to school, they are trapped with their parents all day long, often in confined spaces. A comic strip and a video from Welthungerhilfe for children and young people age 10 and older explain the coronavirus and the associated restrictions and preventive measures.

atingi in Africa

The new digital learning platform atingi aims to reach young people in Africa with e-learning offerings. By providing need-based, free teaching units, the platform hopes to increase vocational training opportunities and thus improve the potential for income.

Participate in the Open Education Week

From 2 to 6 March, with around 220 submissions, the spectrum of the international open education movement will once again be on show: The week-long OE Week spotlights amazing work from over a dozen categories including live, face-to-face events, webinars, projects, and resources. Of course, the Media Portal will be part of it.

Comenius EduMedia Seal for the Media Portal

Great joy for our education team: The Gesellschaft für Pädagogik, Information und Medien e. V. was very impressed with the quality of our media and our commitment to high-quality STEM lessons, and has honored the Media Portal with the prestigious Comenius EduMedia Seal.

Coding in STEM education – Basic programming skills

Can you program a watering can? Or measure the temperature with a glove? The “Coding in STEM education” brochure published by Science on Stage e.V. shows how tasks like these can be implemented using microcontrollers. It provides practical advice for elementary schools and especially for secondary schools.

The media portal celebrates its birthday

It was exactly ten years ago, in May 2009, that we launched the Media Portal. Our goal: to provide teachers with free, high-quality digital teaching materials for the STEM subjects. A lot has happened since then. Curious? Click through our photo gallery, where we’ve chronicled the developments of the past ten years for you.

Environmental protection in the classroom: Three diverse learning packs

Would you like to teach the topic of environmental protection to your class in a diverse, easy-to-understand way? With the free Global Ideas learning packs, the environmental series from Deutsche Welle, you can use an effective, exciting multimedia approach to cover topics such as plastic waste or the forest.

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Make the classroom your laboratory

Our international educational program Experimento presents real-world science and technology content. Students can work entirely on their own to discover interrelationships around the themes of health, energy, and the environment. The content addresses value-shaping issues to help students develop socially aware, conscientious behavior.

All Experimento media can be found here.


Here you can find our editor picks: media packages on topical themes or materials that were particular favorites among our users ...

Tip: Design Thinking in STEM lessons

Design Thinking is an excellent method in STEM lessons for making global challenges tangible in a creative way and for developing solutions. Students work in teams to develop ideas, build prototypes, and test the prototypes’ impact. We present the concept in depth on our Methods page.

New: Interactive e-book on doing fractions

An interactive e-book from the TUM School of Education provides an exciting gateway to doing fractions, with illustrations, learning support, tasks, and games. Designed for about 15 lessons, the e-book is appropriate for both classroom instruction and self-learning.

Media tips for teaching from home

Here, we will present to you selected materials from the Media Portal that are well suited for self-learning at home – sorted by grade, subject and topic: Elementary school, Health education:
The human ear

Grade 5 to 8, Nature and technology:
Water shortages

Grades 9 to 12, Physics:
Energy converters

Media tips for teaching from home

Here, we will present to you selected materials from the Media Portal that are well suited for self-learning at home – sorted by grade, subject and topic: Elementary school, Social studies:

Grade 5 to 8, Nature and technology:
pH value

Grades 9 to 12, Chemistry:
Electrochemical voltage

Media tips for teaching from home

Here, we will present to you selected materials from the Media Portal that are well suited for self-learning at home – sorted by grade, subject and topic: Elementary school, Mathematics:

Grades 5 to 8, Nature and technology:
Water cycle

Grades 9 to 12, Physics:
Renewable energies/Electricity at home

Tip: Why do we wash our hands?

Regular, thorough hand hygiene is an effective protection against pathogens such as the coronavirus. How come? Our media package "Skin and hygiene" provides concrete, varied experiments and information materials to explain correlations and raise awareness to the topic: How does soap work? How can diseases be spread via our hands? Why does washing our hands protect?

New: media package Big Data

Instagram, WhatsApp, or in virtual gaming worlds – most young people use and leave behind large volumes of data, usually unknowingly. The media package "Big Data" helps students recognize the effect of big data and form their own opinion on the topic. With an explanatory video, practical examples and interviews, it provides a comprehensive working basis for teaching at secondary schools.

Editors' tip: Photosynthesis

Updated: The photosynthesis is the only natural process, which can store solar energy permanently and at the same time ensures the formation of oxygen. The updated media package explains the physiological process through interactive graphics, videos and a simulation. The materials are suitable for chemistry and biology classes from grade 7 onwards.

Editors' tip: Separation methods

Are pan drippings and salad dressings emulsions? Which separation methods are suitable for producing drinking water from seawater? The Mixtures of substances and separation methods multiple choice test from the Experimento | 10+ How does waste separation work? media package provides 18 questions for students to check their knowledge in chemistry class.

Editors' tip: HTML5

Our interactive exercises and learning modules are going mobile: We’re replacing the Adobe Flash format with the open standard HTML5. This makes it possible to use the materials on all mobile devices without running Adobe Flash Player. Here you’ll find all the media that have already been converted, including Trade winds, Find axes of symmetry, and The natural water cycle.

Stay up-to-date!

About four times a year, we inform you about new media on this portal as well as current studies and events related to OER and STEM.

Media Portal newsletter – register now

About four times a year, we inform you about new media on this portal as well as current studies and events related to OER and STEM.

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