Sunday, June 24, 2012

Homojen Heterojen Karisimlar


 Bu aktiviteyi gorme kaybi olan cocugunuz icin rahatlikla evde uygulayabilirsiniz.





Aktivite :Homojen ve Heterojen Karisimlar

Amac: Homojen ve heterojen karisimlar olusturup, farkliliklarini saptamak.

Teori:

Birden fazla maddenin kimyasal özelliklerini kaybetmeden rastgele ranlarında bir araya gelmesiyle oluşan maddelerdir.

Karisimlar:
- Saf degildirler.
- Karisimi olusturan maddeler kimyasal ozelliklerini korurlar.
- Fiziksel yollarla bilesenlerine ayrilabilirler.
- Erime ve kaynama noktalari sabit degildir.
- Sabit bir ozkutleleri yoktur.

 Karışımlar homojen ve heterojen olarak ikiye ayrılır.

Homojen karışım

Özellikleri her yerinde aynı olan karışımlardır. sekerli-su, tuzlu su karışımları gibi...

Heterojen karışım

Özellikleri her yerinde aynı olmayan karışımlardır. Zeytinyağı - su, süt, ayran mayonez gibi...
Materyaller:

·    Tabak
·    Kase
·    Bardak
·    Marketlerden alinabilecek seker karisimlari haribo gibi, kuru uzum
·    Toz icecek
Deneyin Yapilisi:

A.
Seker, jelibon, kuru uzum gibi yiyecekleri istediginiz miktarda karistip buyuklugu degisen kase ve bardaklara paylastirin.

Ogrenciden her kase veya bardaktaki maddeyi saymasini isteyin. Mesela buyuk sari kupada 25 tane kuru uzum, 5 tane seker; sari kasede 30 kuru uzum, 10 jelibon gibi. 

Karisimi olusturan farkli maddeler ve kolay ayirtedilebildiginden hareket ederek ogrenciye heterojen karisim ozelliklerini belirtiniz.

B.

Toz icecekleri sui le karistirmadan evvel ogrenciden dokunmasini  ve gozlemlerini soylemesini isteyiniz. Arzu edilen miktarda su ile karsitirdiktan sonra ogrencinizden tekrar karisima dokunmasini ve gozlemini kaydetmesini isteyiniz. Iki sonucu karsilastirarak ogrencinize homojen karisim tanimi veriniz.

Monday, June 11, 2012

What comes to mind?


Whatever you’re doing at this moment, please stop and ask yourself this question: “When I think of a person with a disability, I usually think of someone who………What comes to mind? Quickly picture these images, thoughts, and feelings. If you're typical, disability probably evokes a mixture of feelings and thoughts influenced by centuries old beliefs involving stereotype, stigma, and devaluation (Gartner & Joe, 1987; Longmore, 1985). Most of us prefer to think that disability happens to "THE OTHER GUY." Yet, according to Statistics Institute of Turkey (www.tuik.gov.tr) figures, 8.5 million people – 13 % of the total population- have a disability (physical and mental).


Disability is a common experience that we view as uncommon. Similar to culturally diverse populations based on race, ethnicity, and gender, many students hide their disabilities because of fear and prejudice—theirs and ours. Students bring a variety of physical, cognitive, emotional, sensory, and learning disabilities into the classroom; hidden and obvious, recognized and unrecognized. Few teachers in colleges have any didactic or significant prior exposure to disability. Unfortunately, even faculty educated to teach students with disabilities may lack experiential preparedness. As a result, disabled persons may feel misunderstood in educational settings and be negatively affected by teacher perceptions about disability. 

Viewing each student as a person begins with self-awareness of personal biases and assumptions about disability. Historically, our language and media images surrounding disability have evoked sympathy, pity, or horror. How do we view others? Do they have value and worth? Are they capable, equal, responsible for self, and able to make decisions? We see a person using a wheelchair and assume cognitive impairment in addition to physical disability. What do my perceptions and expectations mean for me as a teacher and for students, disabled or non-disabled? Our response to someone who moves, speaks, hears, sees, thinks or learns differently from the expected has powerful ramifications for that student's relationships with us and his/her peers.

 
Myths Surrounding People with Disabilities 

Physically disabled = mentally disabled
Wheelchair = hard of hearing, blind, or stupid
Learning disabled = ignorant or mentally disabled
People with disabilities want to be pitied
You can always tell if a person has a disability by looking at them
People with mental disabilities don't know when you make fun of them

While we attempt to create classroom environments that honor the diversity of all persons, we remain largely unaware of disability bias in language (Blaska, 1993). Stereotypical language promotes exclusion, devaluation, and notions of incompetence. "Cripple, handicapped, or confined to a wheelchair" convey negative images of disability. 

............

Don't assume that you understand disability. You may never understand--unless you become disabled yourself. College students with disabilities have learned to compensate for differences; ask how you can work with them. One young adult described difficulties related to physical disability as "challenges" rather than as "burdens" (Treloar, 1998). 
 ...........

 Disability promotes thinking "outside the box." Do we allow students the freedom to use different methods to learn? Believe that the student can achieve the desired results, but recognize that the path in reaching the goal may vary;

 
Effective teachers must create learning environments that anticipate success and assist students to move toward this prize. This becomes increasingly important when students have cultural backgrounds or other differences which vary from the usual. 

Jenny, user of a motorized wheelchair, repeatedly received both direct and indirect messages that she would never become a teacher. Her teachers' reasons focused on her physical limitations: She could not physically quell an altercation by students, were it to arise. Because Jenny could not use her hands to develop audio-visual materials for classroom assignments, she instructed others to prepare the requisite materials. Her physical inability to directly accomplish these assignments promoted the concern that using others as her hands was "cheating." What does this imply about our attitudes toward reasonable accommodations?

Jenny, now a teacher, capitalizes on the limitations that drew concern of her teachers. Every student in her class is responsible for a task usually performed by the teacher. Each student's activity is essential for the whole: the teacher facilitates learning. 

The principal who hired Jenny took a risk: He saw beyond the body that uses a motorized wheelchair. He focused on the teacher as a person; he chose to see what "could be," rather than "what isn't." Shouldn't that be our perspective when a student with disabilities enters our class? 




 Treloar, L. L. (1998). Perceptions of Spiritual Beliefs, Response to Disability, and the Church. Unpublished Doctoral dissertation, The Union Institute, Cincinnati, OH.


Yalniz Degilsiniz!



Ulkemizde engelli cocuk ve genclerimize saglanan egitim olanaklari farkli kaynaklara gore %1 oranindadir. Ozel egitime ihtiyac duyan cocuklarimizin sayisinin yaklasik 7-8  milyona yaklastigini hatirlayacak olursak, engelli cocuga(cocuklara) sahip ailelerin personal azligi sebebiyle cocuklarinin egitimleriyle ilgili sikintilar yasadigi karsimiza cikacaktir. Bu nedenle engelli cocuklarin egitimine bir parca yardimci olmak; ailelere yalniz olmadiklarini hissetirmek sorumluluk sahibi biz akademisyenlerin yegane isteklerinden biridir.