Name
Motions
Topic
Physics
Learning time
50 minutes
Designed learning time
3 hours and 33 minutes
Size of class
24
Description
motion description
Aims
motion, trajectory and speed, relativ motion
Outcomes
Knowledge, Knowledge
Editor
mcoqueret
Comment décrire le mouvement d'un objet ? Object in motion, how can you describe it ?
50 minutes)
• Discuss
15
Pupils give some words to describe motion, teacher collecte the words on tricider or on the blackboard : http://www.tricider.com/brainstorming/2sSDJW3svnR
15
Sum up : To describe the motion of an object we need his : trajectory and speed skier / skieur : http://bit.ly/2emvmj2 100 m JO Rio 2016 : https://www.youtube.com/watch?v=V9sxs9ekWC0 Big wheel /Grande roue https://edpuzzle.com/media/580dcd727d3fee093f91ee5a
• Collaborate
15
Give a short définition of the trajectory and the speed
• Discuss
5
Discuss the definitions with the pupils and write a commun definition of trajectory and speed. Exercices to calculate speed at home.
Notes:
The videos are projected to the class so as to have a discussion and a commun definition that we write together on the computer project to the class. Trajectory / trajectoire : the way the object moves / chemin suivi par un objet au court du temps. Average Speed / Vitesse moyenne : distance divided by time / distance parcourue divisée par la durée du parcours
What is the average speed of a walker
65 minutes)
• Discuss
10
How can we have the speed of a walker ? What can we measure ?
• Investigate
15
Write 2 or 3 sentences to explain the mesures you have to lead to obtain the average speed of a walking pupil. Commun procedure and drawing.
• Practice
25
Each team (3 or 4 pupils) take 1 chronometer and 1 meter outside. Each team draw a straight line of 4 m on the floor and mesure the time to cross this 4 meter by walk of each pupils. Sum up the datas on the computer. Calculate the average speed of each pupil, of each team and of all the class.
• Discuss
10
Discuss with the pupils about the date measurments : How they walked (regular irrégular on the line, ...). Measurment mistakes (chrnometer, meter, ...).
• Investigate
5
The average speed of a walker is 5 km/h compare wtih the Data collected by the class.
Notes:
The datas are collected on the teachers computer and projected to all the class, with diagrams.
Motions types / Types de mouvements
45 minutes)
10
Accelerated motion / mouvement accéléré Decelerated motion / mouvement ralenti Uniform motion / mouvement uniforme
10
Pupils has to watch the video and answer to the questions.
• Collaborate
25
Each team has to pick up a word and work on it to create a poster that can illustate an d define the word piked up. To help them they have the video, online dictionnaries science books.
Notes:
The videos are projected to the class.
Relative Motion
53 minutes)
3
The teacher project the video (0: 00 till 1:37) with the projector : link : https://www.youtube.com/watch?v=Fftar0rLi7Q Pupils watch the video a first time and read the questions
• Discuss
10
Discussion about the video Is there only one point of view ? What object is chosen ?
• Investigate
20
The teacher projects the video (0:00 till 1:37) with the projector 2 times : The second time pupils watch the video and answer to the questions on their note book The third time pupils draw the trajectory of the balloon in the 2 differents point of view : the ground and the car And they correct their answers.
• Collaborate
15
Pupils compare their answer and discuss about it Each group project the video from (1:23 till 1:37) with the projector : 2 pupils in front of the screen with a pointer : Each pupil represent a point of view and with the pointer they point each position of the balloon on the screen so as to draw its trajectory. Each group of pupil do the same and correct their answers
• Discuss
5
Each group present their answer The teacher projects the video (1:37 till 2:07) with the projector so as to corect pupils answers
Notes: