1 00: 00: 00,000 -> 00: 00: 04,980 We will test version 1 of the application by clicking on the blue icon 2 00: 00: 04,980 -> 00: 00: 07,350 on two devices (smartphones) first one the left, 2nd on the right. 3 00: 00: 07,350 -> 00: 00: 11,980 The current vote appears butvwe will choose another one. 4 00: 00: 12,160 -> 00: 00: 15,839 We will click on the admin button. For the moment it is not locked 5 00: 00: 15,840 -> 00: 00: 19,640 but the routine is already there to implement a password. 6 00: 00: 19,640 -> 00: 00: 25,940 We will select a question, for example the question on animals. 7 00: 00: 25,940 -> 00: 00: 31,200 So we go back to the student side by posting this new question 8 00: 00: 31,200 -> 00: 00: 35,400 and we see the result of previous votes on this question. 9 00: 00: 35,400 -> 00: 00: 40,040 If we want to add a vote, let’s choose the cat. 10 00: 00: 40,040 -> 00: 00: 43,200 Number of votes on the cat is 5 for now. 11 00: 00: 43,200 -> 00: 00: 47,940 and after the vote we see it displayed on the left phone 12 00: 00: 47,940 -> 00: 00: 51,500 and also on right where it has changed to 6. 13 00: 00: 51,500 -> 00: 00: 56,720 We can now go to the admin or teacher’s side and ask for display of the right answer, 14 00: 00: 56,720 -> 00: 00: 59,300 We do this by clicking on the "show answer" button. 15 00: 00: 59,320 -> 00: 01: 05,160 Display of votes is updated with the correct answer in green. 16 00: 01: 06,160 -> 00: 01: 11,400 We can change the question again, for example the earth-moon distance 17 00: 01: 12,560 -> 00: 01: 16,180 We see that when we post this question 18 00: 01: 16,820 -> 00: 01: 18,920 this poll question appears on the phone 19 00: 01: 19,000 -> 00: 01: 25,780 where we will then vote 380 000 km 20 00: 01: 26,100 -> 00: 01: 28,480 OK I'm doing this vote. 21 00: 01: 28,480 -> 00: 01: 32,120 and on the other phone left 22 00: 01: 32,120 -> 00: 01: 36,080 Let’s vote 38,000 km. OK it works. 23 00: 01: 37,060 -> 00: 01: 39,660 Now what I can try with this version 1 24 00: 01: 39,660 -> 00: 01: 43,320 is to make simultaneous votes or updates, at the same time from 2 phones 25 00: 01: 43,320 -> 00: 01: 47,460 I will do this by clicking on the phones 26 00: 01: 47,460 -> 00: 01: 53,120 and will select for 3800 km on the left phone 27 00: 01: 53,120 -> 00: 01: 55,620 and 3,800,000 km on the right one. 28 00: 01: 55,620 -> 00: 01: 58,360 What I should we normally see 29 00: 01: 58,360 -> 00: 02: 04,260 is that votes for 3,800 and 3,800,000 go up to 1 30 00: 02: 04,260 -> 00: 02: 09,460 So let’s vote: 3, 2, 1, Go : I vote 31 00: 02: 10,520 -> 00: 02: 15,170 What happened here is that the 2 votes overlapped and 32 00: 02: 15,170 -> 00: 02: 19,280 only one has been taken into account, in this case for 3,800 km 33 00: 02: 19,280 -> 00: 02: 23,260 So we see that this version 1 does not work when votes overlap 34 00: 02: 23,780 -> 00: 02: 28,310 And votes are lost. 35 00: 02: 28,310 -> 00: 02: 31,310 Last point I whish to look at, with this version Is a function that will be improved in version 2 36 00: 02: 31,310 -> 00: 02: 34,760 That's when we change the question, 37 00: 02: 34,760 -> 00: 02: 38,540 for example we put 45 000 km here 38 00: 02: 45,160 -> 00: 02: 51,070 and we press the pencil to update, 39 00: 02: 51,070 -> 00: 02: 54,000 we see that the question about the earth-moon distance has been changed 40 00: 02: 54,000 -> 00: 02: 58,420 and we see on the right device that distance has also been updated 41 00: 02: 58,420 -> 00: 03: 04,460 Since the list of accepted answers has changed, vote count has been reset. 42 00: 03: 04,460 -> 00: 03: 08,100 OK That's all for version 1 wher we saw that 43 00: 03: 08,280 -> 00: 03: 11,560 Several votes in a short time, from different phones, 44 00: 03: 11,560 -> 00: 03: 14,580 Can lead to loss of information :This App is not a poll App! 45 00: 03: 15,420 -> 00: 03: 18,800 We will now test the 2nd version of the App 46 00: 03: 18,800 -> 00: 03: 22,080 Where we handled concurrent updates 47 00: 03: 22,080 -> 00: 03: 24,360 or simultaneous updates from different places 48 00: 03: 24,360 -> 00: 03: 28,700 On the first phone, I will select the 38,000 km option. 49 00: 03: 28,700 -> 00: 03: 32,720 and on the second post I will select the answer 380,000 km 50 00: 03: 33,140 -> 00: 03: 36,840 and I will vote at the same time on both. 3 2 1 0 51 00: 03: 38,960 -> 00: 03: 44,380 I see that both votes have been counted in red and green, 52 00: 03: 44,380 -> 00: 03: 46,840 corresponding to the 2 votes I did. 53 00: 03: 46,840 -> 00: 03: 48,640 May be I can test again, 54 00: 03: 48,640 -> 00: 03: 54,460 for example choosing 3 800 km on the right and 3 800 000 km on the left 55 00: 03: 54,640 -> 00: 03: 57,400 and vote again : 3 2 1 0 56 00: 03: 57,400 -> 00: 04: 01,040 HEre again we have a vote count that is correct 57 00: 04: 01,040 -> 00: 04: 03,000 which was not the case with version 1. 58 00: 04: 03,000 -> 00: 04: 08,200 Other improvements made to version 2 are minor, 59 00: 04: 08,200 -> 00: 04: 13,660 In the question update mode, when we click on the pencil or new button 60 00: 04: 13,660 -> 00: 04: 20,080 we switch to edit mode and can make changes,then save or cancel. 61 00: 04: 20,620 -> 00: 04: 31,180 The other aspect that we see, 62 00: 04: 31,180 -> 00: 04: 37,750 is that we need to be in this edit mode to change values. 63 00: 04: 37,750 -> 00: 04: 42,760 You need to go through the "new" or "update", which brings safety. 64 00: 04: 42,760 -> 00: 04: 47,720 Clicking the "new" will set question variables to empty values, including the tag. 65 00: 04: 47,720 -> 00: 04: 54,960 Do not forget to update the tag. If empty, validation will be refused.