Lifelong Learning Programme

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Experiences

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TEACHERS EXPERIENCES FORM

Title of the Experience
Fungi practice
Name of the teacher
M. Reyes LLácer Pérez
Country where it took place
Spain
School typology
High Secondary School
Thematic Area
Biology
Experience typology
Laboratory
Type of contact
Direct
Description of the Experience
The experience involves a study of fungi component elements in the laboratory, and that learning is most effective when students are actively involved in experiences and not merely theoretical knowledge.

In the first part mushroom spores recollection is performed by a paper located under the cap of a mushroom. After 3 - 4 days spores are visible and are aligned along the laminae of the hat. These spores can be observed microscopically. It is also possible, in many cases, observe mycelium at the base of the foot mushroom.

Oranges that are located in a wet space with low light can develop growth of Penicillium (it is possible also use other moldy food). In few days the concentric fungal growth and the occurrence of spores was observed from the center outward. Fungal preparation is done and can be viewed both hyphae, such as brush-shaped sporangia and spores.

A yeast preparation in the microscope allows to observe the differences between these types of fungi.

Fermentability of the yeast can be observed by preparing a series of solutions to which is added Saccharomyces cerevisiae. In different bottles the same amount of water is added, in one of the bottle two spoons of sugar are added, in the second bottle is added the same amount of flour and in the third bottle is added saccharin. It has to be well dissolved and in all the bottles is added the same amount of yeast. A fourth bottle containing only water and yeast is prepared. Then a balloon is put on the top of each of the bottles, which acts as a seal or plug. After a few hours the balloon starts to inflate in those bottles in which fermentation occurs. Students have to reason why there has been fermentation in some bottles.

The practices of these three types of fungi allows to identify the elements of fungi and show the ability of yeast fermentation

Comments on this Teachers Experience

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Date: 2014.10.16

Posted by Darina Tatarlieva (Bulgaria)

The proposed practice describes a laboratory experiment for studying the kingdom of Fungi, which in Bulgaria is studied at 7th grade. I have not taught biology at this level and it is hard for me to assess the applicability of the practice, but I find it very interesting and I think with little adaption it will be very interesting for students too.

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