1. FLIPPED CLASSROOM ACTIVITY CONSTRUCTOR- Using existing content
Prepared by:
Nitin Jayakumar, Faculty of Technology, RK University

2. Department of Mechanical Engineering, FOT, RK University
About Me
I Nitin Jayakumar, working as Lecturer in Department of Mechanical Engineering at Faculty of Technology, RK University, Rajkot.
I wish to design Flipped Classroom Activity for the topic name “Design of Cotter Joint”.
Department of Mechanical Engineering, FOT, RK University
<a rel="license" href=" alt="Creative Commons Licence" style="border-width:0" src=" /></a><br /><span xmlns:dct=" property="dct:title">Work</span> by <span xmlns:cc=" property="cc:attributionName">Nitin Jayakumar</span> is licensed under a <a rel="license" href=" Commons Attribution-NoDerivatives 4.0 International License</a>.

3. Nitin Jayakumar Design of Cotter Joints Design of Machine Element
Mechanical
3rd Year, Diploma Students in Mechanical Engineering
FOT, RK University
Department of Mechanical Engineering, FOT, RK University

4. Out-of-Class Activity (Design-1)
Learning Objective(s) of Out-of-Class Activity
At the end of watching the videos, students should be able to-
Design spigot of joint.
Design socket of joint.
Design cotter of joint.
Key Concept(s) to be covered:
Design of Spigot, Socket & Cotter pin.
Department of Mechanical Engineering, FOT, RK University

5. Out-of-Class Activity (Design-2)
Main Video Source URL: License of Video: Standard YouTube License Mapping Concept to Video Source
Concept
Video Segment
Duration (in min)
Design of Cotter Joints – V1
10:05 – 14:05
4 Mins
Design of Spigot – V2
14:06 – 26:16
12 Mins 10 Secs
Design of Socket – V3
26:17 – 34:36
8 Mins 19 Secs
Design of Cotter – V4
34:40 – 48:33
13 Mins 53 Secs
Total Duration
38 Mins 22 Secs
Department of Mechanical Engineering, FOT, RK University

6. Out-of-Class Activity (Design-3)
Aligning Assessment with Learning Objective
Learning Objective
Assessment Strategy
Expected Duration
Additional Instructions (If any)
Design of Spigot
A cotter joint has to be designed to connect two mild steel rods for a pull of 30kN. The maximum stresses are 55MPa in tension, 40MPa in shear and 70MPa in crushing.
Calculate the diameter of spigot.
5 Mins
Watch V2 for the reference.
Department of Mechanical Engineering, FOT, RK University

7. Out-of-Class Activity (Design-3)
Aligning Assessment with Learning Objective
Learning Objective
Assessment Strategy
Expected Duration
Additional Instructions (If any)
Design of Socket
A cotter joint has to be designed to connect two mild steel rods for a pull of 30kN. The maximum stresses are 55MPa in tension, 40MPa in shear and 70MPa in crushing.
Calculate the outside diameter of socket.
7 Mins
Watch V3 for the reference.
Department of Mechanical Engineering, FOT, RK University

8. Out-of-Class Activity (Design-3)
Aligning Assessment with Learning Objective
Learning Objective
Assessment Strategy
Expected Duration
Additional Instructions (If any)
Design of Cotter
A cotter joint has to be designed to connect two mild steel rods for a pull of 30kN. The maximum stresses are 55MPa in tension, 40MPa in shear and 70MPa in crushing.
Calculate the width and thickness of cotter.
5 Mins
Watch V4 for the reference.
TOTAL DURATION: 17 MINS
Department of Mechanical Engineering, FOT, RK University

9. In-Class Activity (Design-1)
Learning Objective(s) of In-Class Activity
At the end of watching the videos, students will be able to-
Solve problems on cotter joint to understand the failures at different sections.
Calculation of different dimensions of different parts of the joint.
Key Concept(s) to be covered:
Use of procedural design of cotter joint to estimate the dimensions of different parts.
Department of Mechanical Engineering, FOT, RK University
<a rel="license" href=" alt="Creative Commons Licence" style="border-width:0" src=" /></a><br /><span xmlns:dct=" property="dct:title">Work</span> by <span xmlns:cc=" property="cc:attributionName">Nitin Jayakumar</span> is licensed under a <a rel="license" href=" Commons Attribution-NoDerivatives 4.0 International License</a>.

10. In-Class Activity (Design-2)
Active Learning activity performed
Problem solving methodology using
Think-Pair-Share.
Department of Mechanical Engineering, FOT, RK University
<a rel="license" href=" alt="Creative Commons Licence" style="border-width:0" src=" /></a><br /><span xmlns:dct=" property="dct:title">Work</span> by <span xmlns:cc=" property="cc:attributionName">Nitin Jayakumar</span> is licensed under a <a rel="license" href=" Commons Attribution-NoDerivatives 4.0 International License</a>.

11. In-Class Activity (Design-2)
TPS Activity
Think (10 Mins): Question was given to the students and they were allowed to solve it in given time frame.
Q. Two mild steel rods 40 mm diameter are to be connected by a cotter joint. The thickness of the cotter is 12 mm. Calculate the dimensions of the joint, if the maximum permissible stresses are: 46 MPa in tension ; 35 MPa in shear and 70 MPa in crushing. Calculate Diameter of spigot, Outside diameter of socket, Width of cotter and diameter of socket collar.
Department of Mechanical Engineering, FOT, RK University
<a rel="license" href=" alt="Creative Commons Licence" style="border-width:0" src=" /></a><br /><span xmlns:dct=" property="dct:title">Work</span> by <span xmlns:cc=" property="cc:attributionName">Nitin Jayakumar</span> is licensed under a <a rel="license" href=" Commons Attribution-NoDerivatives 4.0 International License</a>.

12. In-Class Activity (Design-2)
TPS Activity Pair ( Mins): Now after seeing the difficulties faced by the students for solving the problem, they were allowed to discuss in the group and come to a conclusion where it all went wrong by them and to improve the solving methodology in minimum time.
Department of Mechanical Engineering, FOT, RK University
<a rel="license" href=" alt="Creative Commons Licence" style="border-width:0" src=" /></a><br /><span xmlns:dct=" property="dct:title">Work</span> by <span xmlns:cc=" property="cc:attributionName">Nitin Jayakumar</span> is licensed under a <a rel="license" href=" Commons Attribution-NoDerivatives 4.0 International License</a>.

13. In-Class Activity (Design-2)
TPS Activity Share (5 Mins): Now two pairs were engaged in discussion to come to a conclusion for the problem with smart way of solving it in minimum time frame which could be helpful in solving major problems at later stages of examination. Conclusion was explained with reference with all peers and instructor (me).
Department of Mechanical Engineering, FOT, RK University
<a rel="license" href=" alt="Creative Commons Licence" style="border-width:0" src=" /></a><br /><span xmlns:dct=" property="dct:title">Work</span> by <span xmlns:cc=" property="cc:attributionName">Nitin Jayakumar</span> is licensed under a <a rel="license" href=" Commons Attribution-NoDerivatives 4.0 International License</a>.

14. In-Class Activity (Design-2)
TPS Activity
Department of Mechanical Engineering, FOT, RK University
<a rel="license" href=" alt="Creative Commons Licence" style="border-width:0" src=" /></a><br /><span xmlns:dct=" property="dct:title">Work</span> by <span xmlns:cc=" property="cc:attributionName">Nitin Jayakumar</span> is licensed under a <a rel="license" href=" Commons Attribution-NoDerivatives 4.0 International License</a>.

15. In-Class Activity (Design-2)
TPS Activity - Analysis
Department of Mechanical Engineering, FOT, RK University
<a rel="license" href=" alt="Creative Commons Licence" style="border-width:0" src=" /></a><br /><span xmlns:dct=" property="dct:title">Work</span> by <span xmlns:cc=" property="cc:attributionName">Nitin Jayakumar</span> is licensed under a <a rel="license" href=" Commons Attribution-NoDerivatives 4.0 International License</a>.

16. In-Class Activity (Design-2)
TPS Activity – Analysis
Challenges faced:
Six students didn’t brought calculator.
Few students faced difficulty in solving basic mathematical quadratic equation.
Students were not ready for the surprise activity.
Few students didn’t practice at home because of which many couldn’t complete the problem in time.
Department of Mechanical Engineering, FOT, RK University
<a rel="license" href=" alt="Creative Commons Licence" style="border-width:0" src=" /></a><br /><span xmlns:dct=" property="dct:title">Work</span> by <span xmlns:cc=" property="cc:attributionName">Nitin Jayakumar</span> is licensed under a <a rel="license" href=" Commons Attribution-NoDerivatives 4.0 International License</a>.

17. In-Class Activity (Design-2)
TPS Activity – Analysis
Conclusions:
Students learnt:
Where they are lacking in problem solving.
Smart techniques in calculator to solve the problem in less time.
Their mistake from their peers/group members.
Why problem solving methodology is important.
Students were made aware of how to use calculator effectively.
Discussion wasn’t noisy and could conclude the problem easily even though many concluded beyond time frame.
Department of Mechanical Engineering, FOT, RK University
<a rel="license" href=" alt="Creative Commons Licence" style="border-width:0" src=" /></a><br /><span xmlns:dct=" property="dct:title">Work</span> by <span xmlns:cc=" property="cc:attributionName">Nitin Jayakumar</span> is licensed under a <a rel="license" href=" Commons Attribution-NoDerivatives 4.0 International License</a>.

18. In-Class Activity (Design-2)
Why above activity is an Active Learning Strategy? Because subject being important in terms of problem solving methodology & designing a machine part/sub-part as per procedural techniques, student will learn and understand with their mistakes and their peer’s solving methods rather than listening in class or being passive in class. Higher order thinking by the students is achieved. Feedback is provided instructor at the end of the activity.
Department of Mechanical Engineering, FOT, RK University
<a rel="license" href=" alt="Creative Commons Licence" style="border-width:0" src=" /></a><br /><span xmlns:dct=" property="dct:title">Work</span> by <span xmlns:cc=" property="cc:attributionName">Nitin Jayakumar</span> is licensed under a <a rel="license" href=" Commons Attribution-NoDerivatives 4.0 International License</a>.

19. Department of Mechanical Engineering, FOT, RK University
Creative Commons License:
<a rel="license" href=" alt="Creative Commons Licence" style="border-width:0" src=" /></a><br /><span xmlns:dct=" property="dct:title">Work</span> by <span xmlns:cc=" property="cc:attributionName">Nitin Jayakumar</span> is licensed under a <a rel="license" href=" Commons Attribution-ShareAlike 4.0 International License</a>. OR
Work by Nitin Jayakumar is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
Department of Mechanical Engineering, FOT, RK University
<a rel="license" href=" alt="Creative Commons Licence" style="border-width:0" src=" /></a><br /><span xmlns:dct=" property="dct:title">Work</span> by <span xmlns:cc=" property="cc:attributionName">Nitin Jayakumar</span> is licensed under a <a rel="license" href=" Commons Attribution-NoDerivatives 4.0 International License</a>.