Lesson plan
Roller shutter
. A roller shutter, security shutter, coiling door, roller door or sectional overhead door is a specialized type of door or window shutter consisting of multiple horizontal slats, bars, or web systems interconnected through hinges. The shutter is attached to an axle at the top (the roller), and this axle is rotated to lift and roll up the shutter to open it, or to lower it to close. The axle is typically rotated either manually, typically by pulling a strap, or an automated, motorized system may be employed, particularly for larger doors. This versatile design offers comprehensive protection against various elements, including wind, rain, fire, and theft. When used as a shutter in front of windows, it serves as a formidable deterrent against vandalism and thwarting burglary attempts, reinforcing the security of the enclosed space. It also usually completely blocks out sun light.
Article summary
. A roller shutter, security shutter, coiling door, roller door or sectional overhead door is a specialized type of door or window shutter consisting of multiple horizontal slats, bars, or web systems interconnected through hinges. The shutter is attached to an axle at the top (the roller), and this axle is rotated to lift and roll up the shutter to open it, or to lower it to close. The axle is typically rotated either manually, typically by pulling a strap, or an automated, motorized system may be employed, particularly for larger doors. This versatile design offers comprehensive protection against various elements, including wind, rain, fire, and theft. When used as a shutter in front of windows, it serves as a formidable deterrent against vandalism and thwarting burglary attempts, reinforcing the security of the enclosed space. It also usually completely blocks out sun light.
Key claims
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Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
Bibliography
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Key claims and bibliography are generated from the same tracked claims and sources as the article page.