Difference between revisions of "MHSB - 6 - Science :: Simple machines"
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|machines || मशीन्स || यंत्रे | |machines || मशीन्स || यंत्रे | ||
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Revision as of 01:41, 27 April 2018
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[Contributor - Aasma Ahmad]
Objective: To teach the students about various simple machines like lever, inclined plane, pulley, wheel and axle, wedge and their maintenance and care.
Subtopics to be covered:
- An inclined Plane
- A wedge
- A lever
- A pulley
- A wheel and axle
- Maintenance of machines
Learning Outcome:
- Students know that some machines are simple while others are complex
- They know the different types of simple machines and their uses.
- They also know that machines should be maintained properly to keep them in good working condition
Contributor - Kripa S]
http://cart.ebalbharati.in/BalBooks/pdfs/601020012.pdf#page=93 (Marathi Medium)
http://cart.ebalbharati.in/BalBooks/pdfs/603020012.pdf#page=93 (English Medium)
[Contributor - Kripa S]
http://easyscienceforkids.com/wp-content/uploads/2013/06/simple-machines.gif (simple machines 1)
http://images.tutorvista.com/cms/images/83/simple-machines.PNG (simple machines 2)
[Contributor - Kripa S]
1. Have small groups make their own pulley. Take two small spools of thread and put a pencil through the center. Then tie the ends of a length of string together to create a loop. Have two students hold the pencils and spools and spin them slowly to create a pulley system. Then have another student write a message and attach it to the thread using a paper clip. Use the pulley to pass the message from one person to the other.
2. Tape a pencil to a table. Then place a ruler on top of the pencil to create a lever. Place an object on one end of the ruler and press down on the other end to lift the object up. Try using objects of different weights. What happens? Is it easier or harder to lift heavier objects? Then have your child move the ruler so that the fulcrum is closer or farther away from the load. When does it become easier or harder to lift the load? Does the load ever become too heavy for the lever, and if so, where is the fulcrum?
[Contributor - Aditi Joglekar]
https://drive.google.com/open?id=1c6nQWo06zy940RUUfIuQJFHyeyRcy5gs
[Contributor - Niranjan Kadam]
Transliteration | - | machines | मशीन्स | यंत्रे | |
effort | एफ्फोर्ट | बल | |||
complex machines | कॉप्लेक्स मशीन्स | गुंतागुंतीची यंत्रे | |||
simple machines | सिम्पल मशीन्स | साधी यंत्रे | |||
inclined plane | इन्कलाइन्ड | उतरण | |||
Archimedes Screw | आर्किमीडीज स्क्रू | आर्किमीडीज स्क्रू | |||
wedge | वेज | पाचर | |||
axe | एक्स | कुऱ्हाड | |||
knife | नाईफ | सुरी | |||
chisel | चीसेल | पटाशी | |||
needle | नीडल | सुई | |||
nail | नेल | खिळा | |||
lever | लिव्हर | तरफ | |||
load | लोड | भार | |||
fulcrum | फलक्रम | टेकू | |||
load arm | लोड आर्म | भारभुजा | |||
effort arm | एफ्फोर्ट आर्म | बलभुजा | |||
lever of first order | लिव्हर ऑफ फर्स्ट ऑर्डर | तरफेचा पहिला प्रकार | |||
lever of second order | लिव्हर ऑफ सेकण्ड ऑर्डर | तरफेचा दुसरा प्रकार | |||
lever of third order | लिव्हर ऑफ थर्ड ऑर्डर | तरफेचा तिसरा प्रकार | |||
pulley | पुल्ली | कप्पी | |||
wheel | व्हील | चाक | |||
axle | एक्सल | आस | |||
maintenance of machines | मेन्टेनन्स ऑफ मशीन्स | यंत्रा ची निगा |
[Contributor - Aditi Joglekar]
https://drive.google.com/open?id=1zoHjeLs8htsgDZFqXAocC3H5Fir1KFLH
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