Suchergebnis für: ** Zeige Treffer 41 - 50 von 1400

Arbeitsblatt

Siemens Stiftung

Entorno de aprendizaje 1 - Clasificar materiales (hoja de trabajo)

Hoja de trabajo:para el entorno de aprendizaje "Clasificar materiales” Entrada de umbral bajo: Los alumnos deben clasificar los diferentes objetos de acuerdo con los criterios de su elección. Una tabla con imágenes de los objetos a clasificar y sus nombres soporta la identificación.

Anderer Ressourcentyp

Siemens Stiftung

Bending water (teacher information)

Teaching methods: Teaching methods for teachers are given on the worksheet of the same name. The task addresses the dipole properties of water. Basic ideas on particles with a dipole nature should be used in the explanation of the "Bending a stream of water in an electrostatic field” experiment. The students should have prior basic knowledge of electrostatics and the atomic structure of matter. The level of difficulty of the task is medium to high, depending on the extent of the students’ prior knowledge.As background for the task, the teacher information includes an explanation of the dipole properties of water and how they affect, for example, the freezing and boiling points. These properties also influence the behavior of water in the condensed (liquid) phase.The six incremental hints for the task are provided with the corresponding answers. They are also available as a separate ready-to-print medium named "Bending water (hints for printing)” or as an interactive medium named "Bending water (interactive hints)” on the media portal of the Siemens Stiftung.

Anderer Ressourcentyp

Siemens Stiftung

Agua - sacada del camino (Ayudas interactivas)

Ayudas escalonadas (interactivas):Seis ayudas y respuestas a la hoja de trabajo de igual nombre en un archivo HTML.El trabajar con ayudas escalonadas también permite a los alumnos menos avanzados desarrollar una solución de forma independiente y por lo tanto, alcanzar un sentido de logro y una experiencia de aprendizaje. En la misma hoja de trabajo se dan ayudas en cuanto a contenido y estrategias de aprendizaje para la resolución de la tarea.Información e ideas:Las ayudas y las respuestas se pueden utilizar a través de los códigos QR en la hoja de trabajo en línea.

Anderer Ressourcentyp

Siemens Stiftung

Density depending on temperature

Chart: Density-temperature structure of water compared with benzol; comparison shows the density anomaly of water.Most substances have a continuous trend: the higher the temperature, the lower its density. In phase transitions (gas -> liquid -> solid) the density changes drastically in this temperature range. Water however has a density change at its freezing point. The density does not increase as one would generally expect but drops. The graphic shows the density-temperature behavior of "normal" substances (here benzol) as a contrast. Information and ideas:What could cause this behavior?What practical importance does this anomaly of water have?

Experiment

Siemens Stiftung

Evaporation from plants

Experimentation instructions:Evaporation in plants is demonstrated by an experiment in which the water consumed by three twigs with differing numbers of leaves is compared.Evaporation is one element in the water cycle. The worksheet contains information on how to set up and carry out the experiment.There are also suggestions on how to interpret the experiment.Information and ideas:Students should carry out the experiment to draw conclusions about the relationship between the leaf surface area and the amount of evaporation.The results can then be applied for plants in the desert.

Bild

Siemens Stiftung

Schallausbreitung: Tamburin und Kerze 3

Foto:Die vom Tamburin ausgehenden Schallwellen löschen eine brennende Kerze aus. Drittes von drei Fotos zum Versuch “Tamburin bläst Kerze aus”.Der Versuch “Tamburin bläst Kerze aus” demonstriert eindrucksvoll, wie Schallwellen sich ausbreiten und dass damit eine Bewegung der Luftteilchen verbunden ist.Hinweise und Ideen:Einfacher Versuch, der leicht im Klassenzimmer durchzuführen ist.Weitere inhaltliche Informationen zu diesem Foto gibt es als Sachinformation auf dem Medienportal der Siemens Stiftung.Unterrichtsbezug:Akustische PhänomeneSchall/Akustik: KenngrößenSchwingungen und Wellen

Anderer Ressourcentyp

Siemens Stiftung

Instructions for making a zinc-iodide cell

Teaching method:
Teacher instructions for making a simple zinc-iodide cell.

The zinc-iodide cell or zinc-iodide battery is an ideal model to use at school for understanding how a rechargeable battery works.
The closed-container design suggested here provides greater safety during the experiment, and the ability to reuse the materials protects the environment and goes easy on the wallet.

Information and ideas:
As a supplement to experiment "B7 Capacitor, hydrogen, redox flow - We store renewable energy." This experiment is part of Experimento | 10+, one of the three modules of the Experimento project of the Siemens Stiftung, which includes teacher seminars and kits with experimentation materials in addition to the instructions.

Anderer Ressourcentyp

Siemens Stiftung

B6 Renewable energies (answer sheet)

Answer sheet:
For the student experimentation instructions of the same name.


The answer sheet contains sample answers to all questions asked in the student experimentation instructions. In some cases, the answers are very short, often only in the form of key words. Depending on the learning objective, they can be augmented and enlarged upon with additional material from textbooks or Internet research.
Likewise, the answer sheet will be elaborate on the analyses for the individual subexperiments, but only in cases where experience shows that there could be difficulties.

You will find more detailed information in the related experimentation instructions for Experimento | 10+ "B6 Renewable energies (student instructions)", which are available on the media portal of the Siemens Stiftung.


Anderer Ressourcentyp

Siemens Stiftung

B6 Renewable energies (link list)

Link list:
Further information on the experiment "B6 Renewable energies - Sun, water, wind, hydrogen, and fuel cell".

The links can be used for preparing or for further study of experiments from Experimento | 10+.


Anderer Ressourcentyp

Siemens Stiftung

Separating residual waste magnetically

Information sheet:
Magnetic separation and eddy current separation, two magnetic separation procedures for mixtures of materials are compared with each other using the example of sorting residual waste.

The two magnetic separation procedures are used, for example, to sort residual waste. The text provides information about the kinds of materials the respective procedure is suitable for and the physical principle each procedure is based on. Sample applications of these principles that the students are familiar with from class are mentioned. The way the two procedures work is explained and technical implementation for separating residual waste is outlined.

Information and ideas:
The example of sorting residual waste also works well for learning about other physical separation procedures, such as sifting (separation by grain size) and wind sifting (separation by density).


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