Wednesday, August 24, 2016

Earthquake simulator

Showing the impact of magnitude on the intensity of earthquake and the extent of damage. You can download the app for android phone SIM earthquake 2



iphone - https://itunes.apple.com/us/app/sim-earthquake/id725274179?mt=8


Just shake your phone, and the small city in the screen will start shaking. The greater it shakes, the higher the magnitude and the greater the damage (more buildings will collapse.


You can also do this on desktop - Simulate an earthquake  - look at how the geology, prevention measures and magnitude can affect the extent of damage:

Tuesday, July 26, 2016

Plate Tectonics and Volcanoes

Thanks to Dr Dawn Sweeny Ruth and Mr Jamie McCaughey from Earth Observatory of Singapore, I attended one of the best workshops on Plate Tectonics and can't wait to share!

Definitely a lot of takeaway and most thankful to them for sharing their rich resources.

Using Maps for inquiry based learning:

Each group was allocated one of the three types of plate boundary locations and tasked to describe the patterns of the
1. Topography and bathymetry (where is the high and low terrain? Are there linear or random features? Are features parallel or not? And so on...)
2. Volcanoes (randomly distributed or not? If not, in a line or zone? Wide or narrow? Continuous or intermittent?  Refer to the topography/bathymetry, And so on...)
3. Earthquakes (Randomly distributed or not? If not, in a line or zone?Wide or narrow? All the same focus depth or not? If not, is there a pattern to the depths or not? If there is a pattern, describe. Refer to the topography/bathymetry, And so on...)
4. Seafloor age (Younger/older in which directions? Are age bands wide or narrow compared with other areas? Refer to the topography/bathymetry, And so on...)
Then form a hypothesis on:
Where is the plate boundary? What kind of plate boundary is this? How do you know? Support your hypothesis with evidence.


Plate boundary location: Between South American Plate and African Plate








                    Plate boundary location: Between Australian Plate and Eurasian Plate



She showed us how the data on the depth of earthquake can be used to show the subduction of the oceanic plate below the continental plate.

                              Plate boundary location: Between Indian Plate and Eurasian Plate








Learned a new term today - visco-elastic.  Is the mantle solid? No. Is the mantle liquid? No. It is visco-elastic! Dawn and Jamie used oobleck to illustrate (Jamie made this out of cornstarch) If you pound on it quickly it is like a solid. However if you place your finger on it or put pressure on it slowly, you can pierce through it like a liquid.


Using vegetable oil and syrup we experimented on how viscosity affects the amount of gases trapped - she also mentioned that we can use honey to show higher viscosity. 



We also experimented on how greater amount of gases could be more explosive by using coca cola - one which was already opened containing less gas and the other a new one with more gases.




I also like how Jamie demonstrated how new rocks are formed at the oceanic ridge using two papers.

I also like the following:
Using a 
The modelling clay is also fantastic in demonstrating the difference types of stress (force/unit area):
squeezing (compression), pulling (tension) and smearing (shearing)

When stress is applied quickly versus slowly, different strain occur:
  • elastic strain- temporary and original shape is maintained
  • plastic strain - permanent - ductile deformation in which original shape is not maintained and if the stress is greater than the strength of the material, it will bend or fold.
  • brittle - permanent - brittle deformation in which the original shape is not maintained and if stress is greater than the strength of material it will break or fracture.
Brittle deformation occurs commonly at the surface of the earth (lower temperature). Faults form in the shallower parts of the crust.
Ductile deformation occurs at depth (higher temperatures) Folds form in deeper part of the crust.

Thus faults occur as well as folding at the Himalayas.

Also learned that the materials in the mantle not only because of the increased temperature but also can be due to the decrease in pressure and water. Jamie demonstrated by using a vacuum pump to pump out air from a bottle containing hot water. When there is less air, the hot water actually boiled with bubbles appearing. 


Also love some of the videos she showed:










Friday, April 1, 2016

Humanities Network sharing 2016 - Google sites

My sharing with the teachers in the humanities teachers on the use of Google Site for self-directed and collaborative learning. 

The use of google site allow students to be self-directed in their learning as they can select, manage, and assess their own learning activities any time beyond their curriculum time. To further engage the students in their learning, interactive resources such as Zaption interactive videos and Quizlet can be embedded into the Google site. 

Physical Geography Lessons http://tinyurl.com/sec3geog  
Human Geography Lessons tinyurl.com/sec4geog

Inquiry-based learning is infused through geographical investigation using the Google Site. The use of Google site helps the groups direct their geographical inquiry collaboratively as well as allowing them to review the steps needed in the geographical investigation to encourage self-directed learning. An example will be an inquiry on water quality by the Secondary 1 students from Edgefield Secondary School. I have also used Google sites to guide the students for GI on Coastal Studies and Tourism

Sec 1 GI on Water Resources 2015 http://tinyurl.com/watergi2015
Sec 3 GI on Coastal studies @East Coast Park   tinyurl.com/gicoast
Sec 4 GI on Tourism @ Chinatown tinyurl.com/gitourism

I have created two more google sites in 2017 - 
Sec 1 https://sites.google.com/a/moe.edu.sg/sec-1-geog/home
Sec 2 https://sites.google.com/a/moe.edu.sg/sec-2-geog/

Its also great for sharing resources among the department teachers as it is a secured platform which access permission can be controlled - only share with a certain group of people - intranet.


Google site from Lily Teo Hp

As I learn, I share. As I share, I learn.

I am happy that I have learned from the sharing of other teachers too. I would like to highlight in particular two of the sharing which I personally would like to try out.

Enhancing Students’ Subject Literacy for Open-ended 
Dayan Tan Ying Peng from Juying Secondary School
Dayan showed us how the school use the SMRT (Samples, Marking & Modelling, Rubrics, Template & Techniques) strategy to train students to become more competent writers in open-ended questions (level descriptor question).

From creating a writing framework for the students to designing a rubrics for them to see how they can attain the various level of competency. I also love how modelling is done using process writing and how the the teacher allows the student to see their competency level in their writing by indication it in the marking.

Love the techniques using acronym 123 - 1 stand, 2 sides, 3 points  as we had been using PEEL - point, explain, example and link.











Literacy Support for Students Interpretation of Visual Data in Geography
Linda Ng, Yvonne Poh, Nohani, Yamin, Leong Shu Jun from Jurongville Secondary School.

The teachers designed lesson activities to provide more literacy support and scaffolding with the hope that students can better make use of content vocabulary to express their thoughts more clearly and confidently when interpreting visual data.




Wednesday, March 9, 2016

Google Earth

You can download Google Earth free here: http://www.google.com/earth/download/ge/agree.html

This is how the screen will look when you open up Google Earth app or plugin.



Perform searches from the search box at the top left side of the program.
You can type a place name, zipcode or postcode, a town/city name, an airport or you can even try to type in a latitude-longitude location (in decimal format). Once you press the  Enter key, you'll be "flown" to that destination.  You can take a virtual holiday!
You can also drag the little yellow man icon to the map and you will get to see street view. I do this before I visit a place so that I can navigate the place easily when I am there!

Use the zoom out and zoom in options from the buttons on the right hand side of the screen.
Turn the wheel in the top right corner to spin the item to a better understood angle. 

Click on Exit Street view to go back to the map.

Look for the date the picture was taken from the bottom left hand corner of the screen.
Scroll through the dates to see all the satellite images from different days of the year. 
Zoom to a place on the map where the satellite image has a date, click the "View" menu from the menu bar and click the "Historical Imagery" button to enable the feature. 
Drag the location of the toggle slider switch in the top left corner to a different date and see what the area was like. e.g. you can see what New Orleans was like after Hurricane Katrina, or one of the many famous historical times that date back to 1990! 


Use the Layers button from the bottom left hand side of the screen.
  • Turn on Weather view from the Layers button in the bottom left corner. Click the drop-down negative sign and next to Weather and click both the "Radar" and "Clouds" options. You'll be able to see rain and snow and clouds and sleet on this map, just like you were looking at a weather radar on a TV screen weather broadcasting channel.  (Temperature data has been dropped in 2017
  • Turn on other buttons for additional items to view about the location. You can turn on Panoramio photos from exact locations where others have taken pictures of landmarks worldwide, or even turn on YouTube videos when these videos have been placemarked. Look through that list, and see if you can turn on other very useful features that show the world from the eyes of other viewers.
  • Look at the locations of epicenters to recorded earthquakes by turning on the Earthquake feature in the Gallery drop-down.