Accessible Science
We have a moral duty to remove the barriers to participation, and to invest sufficient funding and expertise to unlock the vast potential of people with disabilities...;
Although equality is a universal human right, prejudice and perceived disabilities too often exclude people with special needs from many opportunities. Especially active participation in Natural Science is much disrupted.
We decided to challenge this status quo. To have a lasting impact, and due to the complexity of this topic, we had to focus our efforts on the needs of one group of disabled people in particular: Visually impaired people.According to the World Health Organization (WHO), 253 million people worldwide live with vision impairments. 217 million have a moderate to severe visual impairment and 36 million are blind. In Germany, 1.2 million blind people lived in 2002. Of these, 600 live in Marburg and 150 of them are students of the Philipps University.
That is a third of all blind students in Germany!
Marburg has taken many steps to make the city more livable for blind people. You can find talking bus stops and elevators, shopping aids in nearly every supermarket and special rooms in the library of the Philipps University. One of the reasons why Marburg has become this hub for blind people is the BLISTA. It is a nationwide competence center for the blind and visually impaired. It established the first high school for visually impaired students worldwide. Nowadays, this Carl-Strehl-School is the only high school in Europe preparing blind students for higher education. Despite these ideal conditions, visually impaired students are only rarely found in fields like biology or chemistry. We intended to show that anyone believing blind people incapable of doing well in these fields is mistaken.
Therefore, the crucial role in our Human Practices project fell towards public engagement and close cooperation with the BLISTA (engl.: German Institute of the Blind) to facilitate equality and accessibility in Science. In the following paragraphs, you can see for yourself.
In context of our human practices project, we had the opportunity to visit the chemistry lessons of a 12th grade from the Blista School for pupil with visual impairment. About 15 students were taught about the nomenclature of alkanes. The teacher catered for students with different needs using various methods. One of these methods attracted our attention when we entered the classroom. Every student possesses his or her own laptop. Asking the students, we figured out, that the school is providing laptops for each student. The teachers upload worksheets on their intranet and using their laptops, the students are able to use these worksheets by scaling them up or using a screen reader.
Additionally, he printed the worksheets in normal print with a big font size and in braille depending on their individual handicap. Another haptic method is the usage of magnets or models in different shapes, to give the students an idea of atomic bonds and orbitals. Additionally auditory methods were used to distinguish between different chemicals in tubes.
After the lesson, we had some time to talk to the teacher and he confronted us with a very interesting question: “How do you explain a blind student how a flame looks and behaves like?”This is a very difficult task because they, of course, can neither touch the flame nor hear it. Tobias Mahnke showed us how they solved this problem. With a kind of heat formable piece of paper, he is able to emulate the shape of a flame and now the students can feel where the hottest position is.
We were impressed by the different methods of teaching students with visual impairment and could learn many techniques to prepare their visit to our lab. In general, we thought back to our chemistry lessons in school and wished that our teachers also used a variety of methods and not the only visualization by sketches. It would have been a lot easier to imagine and understand the configuration of molecules and other complex topics.
It would be a big win for everyone if there could be more communication and exchange between schools teaching students with special needs and regular schools because both could benefit from each other and learn a lot, as we did during our human practices project.
In the past years globalization and digitalization have shaped the world as we know it. Globalization is accelerated by digitalization and the internet is more important than ever before. The web has the ability to work for all people regardless of language, location, gender, age, income or ability. It removes barriers in communication and interaction that many people with disabilities face in the physical world. Yet, badly designed websites and applications can create barriers which lead to the exclusion of possible users. Barrier-free web design provides accessibility to all people regardless of ability or interface. At this point in time a lot people with vision impairment need to adjust web pages to make them accessible to them.
Taking information from our blind interviewee and computational biologist Viktor Kratz we investigated the possibility for a more accessible iGEM Wiki as part of our Integrated Human Practices project. We also reached out to fellow iGEM Teams to collaborate with us in order to present their results on their wiki in a way that is accessible to people with disabilities. Through this, we aim to make the amazing results of the iGEM competition accessible to everyone.
How to design an accessible Wiki
Navigation
All elements of your wiki should be accessible when using only a keyboard as the navigation device.Color contrast
A high contrast between background and e.g. text should be used. This is especially important for buttons and symbols since they can’t be modified by the user.Additionally, red and green should not be used as contrasting colours since people with colour blindness can’t distinguish between those two colours.
Scalability
Font sizes, distances, areas etc. should be set relatively. This can be achieved by using % or em as units instead of e.g. pt.Distances should not be created using transparent pictures. Instead, distances should be formatted using HTML or CSS.
Headings
Headings should be defined as headings instead of defining them as <strong>.Heading should be descriptive. Instead of “Welcome”, your heading should contain important search keys.
Lists
List should be formatted as lists instead of using wordwraps and hyphens.Text
Color or font style should not be used as the sole distinctive feature.Animated text can also cause problems and should be described by an alternative text in the source code.
Frames
Information that belongs together like navigation and content should always be shown in one frame. Otherwise, users have to switch between those frames.Frames should be named with titles like “navigation” or “content” for better orientation.
Figures
To better accomodate people using a screen reader, it is possible to add an alternative text to the source code of figures. This is crucial for obtaining information about the graphic. It is possible to check for accessibility of your wiki. In the settings of most browsers, graphics can be turned off.Image Maps should not be used, as they are only accessible using a computer mouse.
Tables
Tables should be arranged, so that they can be read row for row from left to right.Additionally, a description containing a summary that is not shown but can be read using a screen reader is helpful for understanding the content.
Links
Links to other sites should be in form of a descriptive text instead of non-descriptive links, such as “click here”. If a graphic is used as a link symbol, the alternative text in the source code should point to the information the link leads to.External links should be labeled.