NCERT - 5 - Maths :: Shapes and Angles
Go To: NCERT-Mathematics-Grade 5
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[Contributor - Kripa S]
Objective: Explain different types of shapes and angles
Subtopics to be covered:
- closed and open shapes
- types of angles
- how change in shape is related to change in internal angle
Learning Outcome:
- Students can find different measures of angle
- Students can identify any shape and angle
[Contributor - Kripa S]
https://www.youtube.com/watch?v=xQw8pahieyA ( Geometry - What is an Angle )
https://www.youtube.com/watch?v=6Xb_bJ8Ujyw (Type of angles video 1)
https://www.youtube.com/watch?v=-Tm0LHi8LKM ( Type of Angles video 2 )
https://www.youtube.com/watch?v=2Ks4vl4_X_s (how to get 3D shapes from 2D shapes)
https://hi.khanacademy.org/math/in-math-by-grade/in-fifth-grade-math/new-topic-2015-11-17T22:08:28.879Z (Khan Academy)
[Contributor - Kripa S]
http://www.sketchtips.info/content/1-articles/21-open-or-close-a-path-to-build-new-shapes/screen-sep-15-2015-2.jpg (closed vs open shapes)
http://www.rogersconnection.com/triangles/images/Angles.jpg (angles)
https://encrypted-tbn2.gstatic.com/images?q=tbn:ANd9GcR9MLFdL3q6Np7PFp03ApMMYIT-p_2T81ynFrdwvr5WGiANp9FS (types of angles)
http://s3-ap-southeast-1.amazonaws.com/subscriber.images/maths/2016/06/16073012/141.jpg (types of angles)
[Contributor - Kripa S]
1. Make 8-10 chits of different types of angles. Hand over one chit to one bench and ask them to enact what angle they are. Eg: If it is an acute angle, the students will stand close to middle student, if it is an obtuse angle, the students will stand far away from the middle student. If it is right angle, the students will stand on his one side and in front to depict 90 deg.
2. Use 5-6 pens, or sticks. Make different kinds of shapes with these sticks. How many shapes can you make ? How many are open and how many are closed shapes ?
3. Can you make 8 triangles using 6 matchsticks ? Try
[Contributor - Vijayashree]
[Contributor - Anmol Gupta, Sanand Dekhane]
https://drive.google.com/open?id=0BzNF2YyqQxJ-dFpXUzlRU1BCMU0 (Answerkey 1)
https://drive.google.com/open?id=0BzNF2YyqQxJ-dWFOU2Q2Vkl0ZnM (Answer Key 2)
[Contributor - Fathima Nazar]
| Term | Transliterated Term | Translated Term | |
| closed shape | क्लोज़्ड शेप | बंद आकृति | |
| angle | ऑंगल | कोण | |
| polygon | पोलीगन | बहुभुज | |
| direction | डायरेक्शन | दिशा | |
| shape | शेप | आकार | |
| triangle | ट्रायंगल | त्रिकोण | |
| diagonal | डायगनल | विकर्ण | |
| rectangle | रेक्टेंगल | आयत | |
| protractor | प्रोट्रेक्टर | कोण नापने का यंत्र | |
| right angle | राइट ऑंगल | समकोण |
[Contributor - Anmol Gupta, Sanand Dekhane]
https://drive.google.com/open?id=0BzNF2YyqQxJ-Z0lWWnlyRnQtUTA (Worksheet 1)
https://drive.google.com/open?id=0BzNF2YyqQxJ-Q25UcTR1NXozd3M (Worksheet 2)
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