Arbeitsblatt

Siemens Stiftung

Why do moose have webbed toes? (task)

Worksheet:
Why do webbed toes in moose represent an adaptation to their habitat? Task with a contextual scenario.

A short story leads to the task?s question. The students are to find out why the webbed toes in moose represent an adaptation to their habitat. An informational text about the habitat of moose is provided as an aid: The students should give reasons for their thoughts.
Incremental hints for answering this task are available under "Why do moose have webbed toes? (hints)? on the media portal of the Siemens Stiftung.
Explanations of the experiment for the teacher are found in "Why do moose have webbed toes? (teacher information).?

Anderer Ressourcentyp

Siemens Stiftung

The tropical rainforest (mind map)

Interactive mind map:
Overview with key words on the functions of tropical rainforests and their importance to the ecosystem Earth.

The mind map provides key words on rainforests, in terms of the following:
· Importance
· Ecosystem
· Destruction
· Rainforest protection.


Dieses Material ist Teil einer Sammlung

Anderer Ressourcentyp

Siemens Stiftung

Guideline for "The tropical rainforest" interactive whiteboard content

Guideline:
This document provides an overview of a possible scenario for using the content package entitled "The tropical rainforest" for interactive whiteboards.

This guideline is aimed at teachers. It presents all media of the content package and gives an example of how these media can be brought into a meaningful didactic context.

Using the following sources: Dr. Tom Deutschle; "State of the World?s Forests" from the Food and Agriculture Organization of the United Nations (FAO) (Rome, 2011)


Dieses Material ist Teil einer Sammlung

Anderer Ressourcentyp

Siemens Stiftung

The layers of tropical rainforests

Interactive graphic labeling:
The five layers of tropical rainforests.

The graphic shows the layer structure of tropical rainforests. The labels can be shown all at once or by layers. A height scale can also be shown and hidden step by step.
The graphic can also be labeled by hand on the interactive whiteboard.


Dieses Material ist Teil einer Sammlung

Anderer Ressourcentyp

Siemens Stiftung

Why do moose have webbed toes? (teacher information)

Teaching methods:
Teaching methods for teachers on the worksheet of the same name

From a biology perspective, this task addresses the adaptation of living organisms to habitats; from a physics perspective, it addresses the qualitative link between pressure and area (without calculations).
Degree of difficulty of the task: low to medium.
The teaching methods provide teachers with all the important information on using the worksheet of the same name and the related incremental hints in class. The scientific background on the task and possible variations are provided.
The five incremental hints for the task are provided with their answers. They are also available as a separate ready-to-print medium named "Why do moose have webbed toes? (hints)? on the media portal of the Siemens Stiftung.

Bild

Siemens Stiftung

Tropical rainforests - the Earth?s air conditioner

Photo:
Wisps of fog in the tropical rainforest of French Guiana.

Tropical rainforests produce many clouds of vapor that protect the Earth?s surface from further warming. These clouds reflect the sunlight so that much of the light does not even reach the Earth?s surface in the first place.


Dieses Material ist Teil einer Sammlung

Anderer Ressourcentyp

Siemens Stiftung

Tropical rainforests as carbon sinks

Table:
Overview of the amounts of carbon stored in the biomass and the forests of our Earth.

The values in the table clearly show that no terrestrial ecosystem stores more carbon than the remaining wood of existing forests (82 percent of all carbon).

Information and ideas:
Based on these data, the class can investigate the two climate-control functions of forests: In addition to their property as a giant carbon sink, the large forest areas also function as giant air-conditioners.


Dieses Material ist Teil einer Sammlung

Anderer Ressourcentyp

Siemens Stiftung

Soil of tropical rainforests

Interactive photo labeling:
Soil profile of the humid tropics

Soil profile of the humid tropics with very thin organic topsoil (humus layer) on top of subsoil (mineral soil). The red color of the mineral soil indicates a high proportion of iron and aluminum oxides (laterite).


Dieses Material ist Teil einer Sammlung

Anderer Ressourcentyp

Siemens Stiftung

Characteristics of tropical rainforests

Information sheet:
A few universally valid characteristics that are typical for classic, evergreen tropical rainforests.

The text provides information about the most important characteristics of tropical rainforests with regard to climate, vegetation, and species diversity.


Dieses Material ist Teil einer Sammlung

Anderer Ressourcentyp

Siemens Stiftung

Why do moose have webbed toes? (hints)

Incremental hints:
The five hints and answers for the worksheet of the same name prepared for printing. The last hint presents the complete solution.

Working with incremental hints allows weaker students to develop a solution independently, helping them gain a sense of achievement and experience learning success. The document provides assistance related to the content and learning strategy for solving the task from the worksheet of the same name.

Information and ideas:
The students who did not use the hints to solve the task should also read the last hint with the complete solution to compare their results.
The hints in the prepared tasks have been designed so that they can be printed double-sided. Additional information on how the hints are used is compiled in the teaching methods named "Tasks with incremental hints - An introduction? that are available on the media portal.