FLIPPED CLASSROOM ACTIVITY CONSTRUCTOR – USING EXISTING CONTENT

3rd YEAR UG STUDENTS IN CIVIL ENGINEERING Pallavi Uppala COAGULATION ENVIRONMENTAL ENGINEERING CIVIL 3rd YEAR UG STUDENTS IN CIVIL ENGINEERING RVR & JC CE, GUNTUR

Out-of-class Activity Design-1 Learning Objective(s) of Out-of-Class Activity At the end of watching the videos…… Students will be able to understand the concept and need of coagulation, reactions and the process involved They will be able to explain the mechanism of coagulation(Understand Level). They can solve simple problems involving dosage of coagulant(Apply Level). Key Concept(s) to be covered Coagulation theory Coagulants Mechanisms in this process

Out-of-class Activity Design - 2 (From National repositories) - NPTEL V1: https://www.youtube.com/watch?v=C8ghKCUfcQk V2: https://www.youtube.com/watch?v=wUl5E1SZqBo Duration of V1 is 57:40min & V2 is 57:25min P1: http://www.who.int/water_sanitation_health/hygiene/emergencies/fs2_13.pdf (From Internet) V3: https://www.youtube.com/watch?v=lHIk57r40ik V4:https://www.youtube.com/watch?v=E9V7XqI9S6g License: Creative commons / you tube license Duration of V3 is 03:25min & V4 is 17:39min CONCEPT VIDEO SEGMENT DURATION (in min) Need of coagulation V1 = ( 1:00 - 8:08 ) 8:08 Mechanism V1 = ( 24:00 - 44:00) V4 = (0:05 - 04:46 ) 24:41 Reaction involved V1 = ( 3:18 - 11:15 ) 07:57 Process of coagulation V2 = (35:05 - 52:25 ) 52:25 Jar Test V3= ( 3:17 - 6:21 ) P1 (Pg No : 4) 03:04 Example problem with V4 = ( 7:38 - 17:38 ) V2 = (52:04 - 57:18 ) 15:14

Out-of-class Activity Design - 3 Aligning Assessment with Learning Objective Learning Objective Assessment Strategy (This problem satisfies the learning objective 2 & 3) Expected Duration (in min) Instructions The problem can be solved using reactions involved with the alum Q1. The design flow for a water treatment plant (WTP) is 1 MGD (3.8x103 m3 /d). The rapid mixing tank will have a mechanical mixer and the average alum dosage will be 30 mg/L. The quantity of alum needed on a daily basis in kg/d 8 to 10 min watch V1 & V4 To answer Q1

Out-of-class Activity Design - 3 Aligning Assessment with Learning Objective Learning Objective Assessment Strategy (This problem satisfies the learning objective 2 & 3) Expected Duration (in min) Instructions The problem can be solved by using design considerations Q2) Design a coagulation sedimentation tank to treat 10 million litres of water per day. Make suitable assumptions where necessary 10-15 min Watch V4, V2 To answer Q2

Out-of-class Activity Design - 3 Instructions to do Out of Class Activity: Timely submitted assignments will be given complete marks Late submission of the assignments will affect the attendance and performance evaluation It is suggested to avoid full video as the time durations are clearly mentioned While solving the problem of coagulant dosage, remember that the equation has to be balanced when using molecular weights

In-class Activity Design -1 Learning Objective(s) of In-Class Activity At the end of the class, students will be able to, Solve problems on coagulant dosage Understand the effect of other parameters like pH and alkalinity on coagulation process Key Concept(s) to be covered Mechanisms involved in coagulation process Reactions involved with addition of alum or any other coagulant

In-class Activity Design -2 Active Learning strategy(ies) that I have planned to do Peer Instruction : For Concept clarification Think-Pair-Share For analyzing and understanding the concept of coagulation in Real life

In-class Activity Design -2 Peer Instruction Strategy – What Teacher Does Ask some questions while introducing the topic Gather students opinion on the same by any means like hand gestures or through some technology let the students discuss among them Finally explains how and why some of the options are valid for the asked questions

In-class Activity Design -2 Peer Instruction Strategy – QUESTIONS Q1: Slow mixing of the chemicals with the water to assist in building up particles of flocwhat is Coagulation Coagulation Flash mixing Flocculation Filtration Q2: pH and alkalinity affect the coagulant dose? True False

In-class Activity Design -2 Peer Instruction Strategy – What Student Does They present their answers for the given questions Then they get a chance to discuss with the peers They may come to a conclusion with a particular answer. Then they listen to teacher’s explanation for the correct answer with a valid reason

In-class Activity Design -2 TPS Strategy – What Teacher Does Think: Students are asked to think about the problems and are asked to note down all the problems Pair: After they have done with writing all the points, they are asked to pair up with their neighbour and allowed to discuss each of their answers. Meanwhile as an instructor i have been monitoring all the students and encouraging them to participate actively. Share: After the discussion with their neighbour, the conclusions drawn by each pair was posed infront of all the classmates and the discussion was allowed with whole class. after this students came to a conclusion which includes key points from all the students or key points accepted by maximum no. of students were drawn .

In-class Activity Design -2 TPS Strategy – QUESTIONS Q1: What are the factors affecting the process of coagulation and how? Q2: For 40,000 m 3 /d wastewater, Calculate the volume of the flocculator tank, in which 42 mg/L alum dosage with flocculation at a Gt value of 4.32×104 that produces the optimal results and and the water temperature is 20◦C. Determine the requirment of alum in per week and volume of tank. Think of these problems for 5 min. Pair up with your neighbour, solve the problem for 20min & try to obtain the solution. Then we will discuss the solution with the entire class.

In-class Activity Design -2 TPS Strategy – What Student Does Thinks about the given problems/questions in the given time (10min) They get pair up with peers & starts solving the problems with in the given time (20min) Shares the solutions/answers with the entire class for another 10min.

In-class Activity Design -2 Justify why the above is an active learning strategy The students Use of technology Development of team habits Improving listening & thinking skills Inculcating active participation All the students will get the benefit including slow learners Feedback is also provided at the end (either through peer discussion or instructor summary)