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Siemens Stiftung

Perforation of the eardrum

Labeled graphic:
Simplified illustration of a perforated eardrum.

A perforated eardrum can occur when foreign bodies, for example, instruments to clean the ears, are stuck in too far or when there are loud bangs near the ear.
Violent blows to the ear can also cause perforation.

Minor tears or perforations can heal up by themselves provided they get the proper treatment. In any case, a doctor should always be consulted!

Information and ideas:
Can be used for illustration purposes on the subject of "Ear diseases" either on transparencies or worksheets. Supposedly "harmless" minor problems can turn into serious damage to the ear.

Relevant for teaching:
Hearing defect/hearing impairment

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Siemens Stiftung

Cochlea - an overview

Labeled graphic:
The cochlea with the location of the vestibule, the oval window and the round window. To help understand where the sound enters and exits the cochlea.

The cochlea consists of a coiled canal which appears in three compartments in the section. The part leading upwards is called the scala vestibuli and begins at the oval window.

Between scala vestibuli and scala tympani there is a membranous tube which is also filled with fluid. This is where the actual hearing organ, the Organ of Corti is located.

Information and ideas:
Can be used in a worksheet, for work together on the digital projector, or as an overhead transparency.
Further information regarding this graphic is available as information sheet on the media portal of the Siemens Stiftung.

Relevant for teaching:
Structure and functions of a sensory organ
Reception of stimuli and transmission of information
Functions of senses

Medientypen

Bild

Lernalter

11-18

Schlüsselwörter

Anatomy (human) Chart Ear

Sprachen

Englisch

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Siemens Stiftung

The Ear, Hearing and Hearing Impairment: Cochlea - individual coil section

Labeled graphic:
Section of individual coil of spiral canal of the cochlea.

The labeled graphic shows a section of an individual coil of the cochlea.

The following are labeled: scala vestibuli, tectorial membrane, hair cells of the sensory cells, spiral canal of the cochlea, auditory nerve, scala tympani.

Information and ideas:
Can be used on a worksheet, as an overhead transparency or via digital projector.
Further information regarding this graphic is available as information sheet on the media portal of the Siemens Stiftung.

Relevant for teaching:
The human body
Structure and functions of a sensory organ
Reception of stimuli and transmission of information
Functions of senses

Medientypen

Bild

Lernalter

11-18

Schlüsselwörter

Anatomy (human) Chart Ear Sound

Sprachen

Englisch

Bild

Siemens Stiftung

The Ear, Hearing and Hearing Impairment: Inner ear - location in skull bone

Overview graphic:
The location of the inner ear in the skull bone.

The inner ear is not located in a bone cavity but is embedded in the petrous bone as a "bony labyrinth". The petrous bone is itself part of the temporal bone.

Information and ideas:
From the simple to the complex. The actual hearing organ that is located in the cochlea of the inner ear is quite complex. It is therefore definitely advantageous if the student first of all gets an idea of where and how the inner ear is located in the skull.

Relevant for teaching:
Structure and function of a sensory organ
Reception of stimuli and transmission of information
Functions of senses.

Medientypen

Bild

Lernalter

11-18

Schlüsselwörter

Anatomy (human) Chart Ear

Sprachen

Englisch

Bild

Siemens Stiftung

Entire ear with brain

Unlabeled graphic:
Cross-section of entire ear with auditory nerve and its connection to brain. For incorporation in presentations or for individual projection.

The hearing process does not just involve the hearing organ but also the brain. It is there that the signals are received and understood.

Information and ideas:
This graphic can be used to describe and explain the most important functional areas of the ear and their role in the hearing process.
The teacher can look at the graphic together with the students on the computer screen or get the students to do the labeling either on printouts or on the computer.

Relevant for teaching:
The human body
Structure and function of a sensory organ

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Siemens Stiftung

Speech signal - individual word

Chart:
Screenshot of the oscillographic curve of the spoken word "dogs".

Speech sounds are fluctuating sound signals where the composition of frequencies changes all the time.
Aperiodical overlap periodical parts. Unlike noises, some of which have similar frequency curves, sound in speech is always the carrier of meaning or of messages sent out by the speaker. Other noises like smacking of lips, hissing, rhythms, basic pitch are typical of the individual (acoustic fingerprint) but not essential for the speech content!

Information and ideas:
Supplementary to worksheets and transparencies.

Relevant for teaching:
Sound/acoustics: parameters
Vibrations and waves
Communication and understanding

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Siemens Stiftung

Speech recognition sentence - syllable - phoneme

Chart:
The components of speech, from phoneme to sentence presented visually.

The graphic shows the oscilloscope curve of the spoken sentence "It?s raining cats and dogs" and excerpts from the units from which speech is composed: sentence, word, phoneme.

Information and ideas:
Speech recognition and speech synthesis are very topical themes in the field of information and communication technology.
Further information on this graphic is available as information sheet on the media portal of the Siemens Stiftung.

Relevant for teaching:
The human body
Structure and function of a sense organ
Reception of impulses and information transmission
Sensory perception

Bild

Siemens Stiftung

How long will our energy sources last?

Chart:
A bar chart shows an overview of the remaining years of use of primary energy sources.

Of the fossil energy sources, petroleum will be the first to run out. What is the situation for the other fossil energy sources? Can new technologies delay the point in time when they run out? And is it really true that renewable energy sources never run out?
The time axis has a logarithmic scale.

Information and ideas:
Students learn that the logarithmic scale represents numbers ranging over several powers. More in-depth information regarding how long energy sources will last is provided in the "An overview of energy sources? information sheet.


Dieses Material ist Teil einer Sammlung

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Siemens Stiftung

Phase diagram of water

Diagram:
A P-T diagram for pure water. The lines indicate the temperature and the pressure at which the solid, liquid, and vapor phases exist in equilibrium. All three phases exist in equilibrium only at the triple point; otherwise, there are a maximum of two phases.

In addition to the equilibrium curves (melting pressure curve, sublimation curve, vapor pressure curve), the diagram also includes the pressure and temperature data for the melting, boiling, triple, and critical points.
Attention: The axes of the diagram are not shown true to scale.

Information and ideas:
This diagram also reflects the density anomaly of water (lower density in the solid state than in the liquid state): The melting pressure curve shows a negative slope. The reason for the density anomaly is the hydrogen bonds.

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Siemens Stiftung

The Ear, Hearing and Hearing Impairment: Sense organ of balance

Labeled graphic:
Structure of sense organ of balance with labeling of most important parts.

The sense organ of balance is located next to the hearing organ (cochlea) in the inner ear.
The sense organ of balance is made up of the vestibule and the semi-circular canals. Distinction is made between the sense of position and the sense of rotation.
Sense of position:
The vestibule with saccule and utricle which enable us to perceive our spatial position as well as straight movements.
Sense of rotation:
The three semi-circular canals which enable us to perceive rotational movements.

Information and ideas:
This graphic shows very clearly where the sense organs of balance (sense of position, sense of rotation) are located in the inner ear. It is also clear where they are in relation to the structure of the cochlea.

The graphic can be used as introduction to the topic or to give an overview in order to be able to explain individual parts and sensory organs of the ear.

The teacher can work on the graphic together with students at the computer or get the students to label it themselves either as a printout or at the computer.

Relevant for teaching:
Structure and function of a sensory organ
Reception of stimuli and processing of information.