Translations

Code	Language		Translator	Run

Credits

Written by Loo Kang Wee; Felix J. Garcia Clemente; Francisco Esquembre; Designed by David Loh

https://play.google.com/store/apps/details?id=com.ionicframework.covalentbonding this version has the valency question

Sample Learning Goals

• A Level Chemical Bonding Dot and Cross Diagrams JavaScript Simulation Applet HTML5
• O level Chemical Bonding Dot and Cross Diagrams JavaScript Simulation Applet HTML5

For Teachers

From Google slides (From David) to interactive https://docs.google.com/presentation/d/1fwutLc-jPc1fUyrxJsps3Fhg6_J9y8AEA4pHJ68gdBw/edit?ts=5dd2086a#slide=id.g5292a6c619_0_96

If you are using this simulation in Singapore Schools, please contact This email address is being protected from spambots. You need JavaScript enabled to view it. to get a digital google survey form to collect anonymous data on the effectiveness of lesson and future imporvement to the simulation!. Thanks in advance.

Our own survey suggests strong evidence on effective student learning, appreciative students, good simulation design. Do you agree? let me know in the comments below! https://weelookang.blogspot.com/2020/02/o-level-chemical-bonding-dot-and-cross.html

Chemical Bonding  Dot and Cross Diagrams

Polyatomic ions dot and cross diagram

Chemical Bonding  Dot and Cross Diagrams for Hydrogen Peroxide Direct Link https://sg.iwant2study.org/ospsg/index.php/922

Chemical Bonding  Dot and Cross Diagrams for Hydrogen Peroxide answer is is add up to 8 electrons on each O atom and 2 for H atom, the electron outermost shell with shared electrons = 2,2,2, respectively.  Direct Link https://sg.iwant2study.org/ospsg/index.php/922

Student Survey

survey 1 , 2 data from MGS 2020 total 1 + 2 classes estimated number of students (44 , 46) responses.

typical classroom setting where the anonymous (photo blurred) teacher skillfully explains the learning tasks using https://sg.iwant2study.org/ospsg/index.php/922

typical classroom setting where the anonymous students are each working on their ChromeBook to learn by doing chemistry. this is far better than students working on Google Slides and trying to fit in the electrons on non simulation medium, only getting feedback on the accuracy after the teacher manually marked each students' assigned google slide prepared by the teacher. https://sg.iwant2study.org/ospsg/index.php/922

What do you like about the lesson? (For example, was the lesson successful in helping you to learn the concepts? In what way was the simulation helpful? Did it arouse your interest? Please give more details.)

1. It was successful in helping me learn the basic concepts but it did not give me a very clear understanding of the concept. I was still left with questions and doubts. It was a unique and new way of learning in the classroom. noted, Video Tutorial will be ready after march holidays.
2. Something new. No need to check the periodic table. There are other compounds not tested available. The emoji is cute.
3. It was helpful to visualise the concepts. 
4. the lesson was successful in helping me to learn the concepts. the simulation was helpful. It arouse my interest.
5. it is interesting and can help me learn independently. 
6. The lesson was more hands on than just the teacher explaining to us how to draw dot and cross diagrams
7. This is a more interesting style of learning
8. The simulation made the lesson more interesting as it was interactive  
9. the simulation was easy to use and easy to understand 
10. The simulation helps me to understand better about chemical bonding dot & cross diagram. I also can engage with the lesson better because we get to use technology during lessons and there are colours.
11. yes,it helps me a lot ,I was confused about the definition yesterday night ,but through this lesson, I think I know better about the definition and the process .
12. it helped me to understand better
13. the simulation made me more interested in learning about chemical bonding.
14. I like the fact that we got to learn through using our chromebook and got to try it out ourselves.
15. it allowed me to understand more about the formation of covalent bonds
16. I was fun and was an easier and more interesting way to learn about covalent bonding instead of literally drawing the atom over and over again.
17. It keeps my interest because it is easy to use
18. it was interesting i guess
19. It was interesting and helped me to be more confident in dot and cross diagrams.
20. that we get to attempt it ourselves first
21. It is easy to use and informative
22. it was easy to understand with answers and hints provided
23. The simulation was cute and captured my attention so I enjoyed doing it.
24. The simulation allowed me to discover where the electrons should go and somehow, why it was like that.
25. it's easier to use
26. it was easy and fun to use
27. The lesson was successful in helping me learn the concepts. It gave me more practice in covalent bonding.
28. the simulation gave me a concept of what covalent bonding is about
29. The simulation is much easier than drawing the atoms out.
30. I like that the lesson allowed me to learn independently and the diagrams were simple and easy to read.
31. The lesson helped me have a clear visual on covalent bonding. Helped it to be clearer to me.
32. The answers are not given on the first wrong attempt, we can continue to try to get to the correct answer.
33. The simulation made the locations of the electrons clearer
34. I like that it gives the number of electrons that the user has to use and that the user does not need to refer to the periodic table to do this simulation, increasing interest and ease in doing this while learning something.
35. It was a refreshing change. Instead of drawing the diagrams on paper, I could move the electrons online.
36. it is very entertaining and educative
37. the visuals helped me!
38. it was interesting
39. The colour coding makes the visuals much more easier to see and understand the concepts.
40. The lesson was very fun and engaging. The simulation allowed me to better understand the concepts.
41. It was successful in helping me learn the concepts as it provided a solution and explanation when i didn't know how to do the question.There were also many question which allowed me to try out different questions or different levels of difficulty,allowing me to practice more.
42. it was fun
43. The hints especially helped me to understand the concept
44. I can understand the structures more clearly.
 was quite fun to drag and drop instead of drawing for once. It's also much more convenient as i can check my work immediately instead of waiting for the teacher to come around
45. The simulation was easy to use and was a good reference for doing the worksheet as well !
46. the simulation was helpful in giving model answers for me to understand covalent bonding better
47. The simulation helped me determine the number of valence electrons so it was easier to draw the dot and cross diagram. The simulation was very fun and easy to use and it was a drag and drop application
48. was very successful
49. the simulation helped me better understand the topic better and it was engaging
50. I liked that it was more engaging and gave us room to think for ourselves while having some guidance from the simulation. The simulation made it easier to trial and error so that I could figure out the bonding by myself.
51. it is interactive and clear:)
52. It helped me understand the concept of bonding better. It was very interesting and helpful. I would like to do it again in class sometime.
53. the lesson was easy to follow since the simulation was easy to use and we could just reset instead of redrawing
54. It was a lot easier to correct small errors using the simulation that it is with pen and paper.
55. It was pretty interactive and it helped us to apply important concepts when drawing dot-cross diagrams.
56. - easy to use
57. - I had more confidence in drawing dot and cross diagrams
58. - wide range of ions to choose from
59. - "hints" feature
60. It was easy to use and a suitable amount of help was given (number of valence electrons per element were given)
61. i liked how it was not too complicated to do the dot-and-cross diagrams and the website was easy to use.
62. helpful - it prompted us and gave hints on how to draw the diagram
63. yes i am interested
64. it was good to check whether my diagrams were right
65. Yes it was very helpful. I learnt how to draw polyatomic ions very quickly and I find this kind of simulation useful as I can self-learn without relying so much on the teacher. :)
66. It gives a better visualisation of the dot and cross diagram and helps me to be able to draw the diagram easily.
67. It made the process of thinking how to draw it much easier
68. i was able to learn the concept faster with the use of the website
69. It helped me visualise the covalent bonding between the molecules and made me curious to find out why the molecules bonded in a particular way
70. I liked using the simulation to trial and error with the diagram and to fill in the worksheet.
71. the platform made learning the dot cross diagram more interesting
72. it helped me figure out the answer in my own.
73. the lesson helped to make my understanding of covalent bonding clearer
74. I liked the idea of figuring it out yourself and then having a check answer button this app is great!
75. It made visualising the covalent bonds and the orientation of electrons easier.
76. ー
77. it is fun to drag the electrons around
78. it gives me many chances for trial and error without having to continuously erase my mistakes
79. I like that we get to explore the concept ourselves and learn by trial and error.
80. The simulation was easy to use and allowed me to understand how to draw dot and cross diagrams as it told me what was wrong when I made a mistake
81. I learnt how foreign electrons worked, and it was interesting to see try doing the different questions. It was also easier as the simulation already had the electrons shells put out for you.
82. It helped me to visualise the concept better
83. I liked the lesson because it was more engaging and hands-on, and it also helped me to learn the concepts. It is also better than having to draw out a dot and cross diagram myself.
84. It helped me to see the chemical bonds visually which was very helpful
85. It allowed me to easily move each electron around before writing it on my paper thus it was easier and neater. Furthermore, because of the difference colours it is easier to see the electrons
86. The simulation made it easier for me to visualise the atoms, aiding me in figuring out the configuration of different compounds.
87. It was successful in conveying the concepts of chemical bonding. It allowed me to explore the concept better.
88. It allowed me to understand the concept better as it gave an explanation when providing the answer which was more comprehensive then just searching for the answer online.
89. it was interactive and helped me to understand the lesson better
90. I think it helps me understand where I went wrong and teaches me how to correct my mistakes before I write it down and have to go through the trouble of changing it over again and again.
91. it was fun and easy to use!
92. kept me engaged and aroused my interest
93. it was successful because it was fun and interesting

In what way can the lesson or the simulation be improved? (For example, what features in the simulation would you like to change or add?)

Video

 Version:

1. https://weelookang.blogspot.com/2019/12/chemical-bonding-dot-and-cross-diagrams.html
2. https://sites.google.com/a/mgs.sch.edu.sg/about-me-david-loh/
3. https://weelookang.blogspot.com/2021/09/o-level-chemical-ammonia-and-methane.html

Other Resources

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