mame two viewing materials you can see in your classroom or lobrary.Tell which is the most commonly used and the effective in presenting ideas and why.
1._________________
2._________________
1._________________
2._________________
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The two viewing materials are Books and Bulletin Board. The most commonly used and effective in presenting ideas between this two is the Bulletin Board because in bulletin board you can just post there those helpful informations in the books and other announcements and rules that has been implemented in your school.
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