August 28

Vanuatu

Hi everyone,

I have missed being in touch with you and thought I’d let you know what I was up to these past few weeks. As you know I went to a couple of islands in Vanuatu with my husband Peter. Here is a map showing you exactly how far I travelled. It took almost four hours to fly there from Sydney. Have you ever been on a plane? Where did you go?Vanuatu Islands map

 

As you can see Vanuatu is about the same latitude as Cairns, so if you have ever been there the climate is very similar. This part of the world has a tropical climate so there are lots of rainforests and the terrain is mountainous. I stayed on the largest island Espiritu Santo for ten days. The local people refer to it as Santo. Then we caught a plane to go South to a smaller island Tanna for the remainder of our holiday.

 

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In Santo Peter and I stayed in a resort by the ocean in a small Bungalow and I was able to look out of the rain forests to watch the ocean.

Of course the first thing we did was to snorkel the warm waters, where we found some interesting creatures. Have you ever been snorkelling?

There are some amazing rivers that are fed by underground springs. We were able to travel by traditional canoe down one. Peter even got to paddle, then we were able to swim in a blue water hole. An absolutely incredible experience. How do you feel about sitting on little boats or canoes? Do you think you could paddle one?

Of course there was more snorkelling and more friends to meet in the waters.

On Santo there are villagers that want to share how their traditional way of life works so they invite visitors in to show us their ways. They build all their huts and make various tools from their favourite tree .. the coconut tree. For them it a sacred tree because it provide so much. They get to drink the water/milk, coconut flesh to eat, cophra for cooking, husk and fibre for weaving, wood for building, the shells can be used for utensils or decorations. It is truly a useful tree nothing is wasted.

The villagers met us with a welcome dance and then showed us to separate huts, one for how the women and girls were taught and the other how the men and boys learnt what to do. Only men are allowed to make fire, they showed us their way in the women’s hut. They also make a special drink called Kava which was interesting to taste, it made my tongue and lips go numb!  But on other islands in Vanuatu, Kava should only be drunk by men.

I loved the dances by the people of the village. At one time all the women went into water and made music with their hands by slapping the water. it really sounded as if they had drums, amazing. While they are not an aggressive tribe, they pretended to threaten us in their dance routine… mm was I scared?

Yes we did more snorkelling, but we also went to visit the higher villages and do a trek to The Millennium Caves, so called because they were opened to public visitors in 2000. For this trip we began our walk at a small village where we were introduced to a tribal elder who would escort us to the cave. As we walked through his village we saw a small school, the teacher kindly allowed us to photo them learning their A,B, C’s. I noticed how carefully they were repeating their teacher. OLYMPUS DIGITAL CAMERA

Remember our research on Papua New Guinea? This country is very similar in lots of ways. How does this school compare to ours?

As we trekked through this village we came upon another close by where we met another guide. So Peter and I had a guide each to check we would safely get through this adventure. One obstacle to get over was a bamboo bridge. That was fun. Then it was through the jungle. we were given information about the different plants and their uses and warned not to touch certain ones!

Our trek took us deep into the jungle and through lots of hilly and steep terrain. Thankfully the villagers had built ladders to climb down or had ropes to hang on to. The sun was shining that day and it became quite hot. However this is an area with high rainfall so this track can get very muddy indeed. Before we could enter the cave, our guides painted our faces with symbols to represent the water, rocks and animals of the cave system.

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What an honour to be allowed to go in, I was getting excited because I knew there would be bats in there! Once we got way down to the cave’s entrance we could sense a new adventure just beginning. This cave is 300 m long 30 m wide and 50 m high. We had to walk through water and the base is mainly rocks and pebbles.. very slippery! Lucky we had torches and our life jackets! How do you feel about going into strange wet, dark places filled with flying things?

Inside the cave it was quite cool, I could hear a lot of flapping sounds, I think we startled the small fruit bats and swallows that call the cave their home. Every now and then small bits would fall on me…bat poo! It was quite strange walking through the chilly water in the dark and trying to keep from slipping. After walking for some fifteen minutes, weaving through the twists and turns of the cave, we came out to a small river that ended with huge boulders. We would need to climb up over these.

It took about half an hour to get over the large boulders and then we had the best experience, floating down the river through the canyon. That part was awesome.

There we in fact several rivers to float and swim through as the water level was low. There are times of course when visitors would not be allowed to do this when the river levels are very high. we were fortunate of the drier season. On the way back to Tony’s village he showed us the village garden. They grow all their needs and then bring excess to market. We had a fabulous time and were thankful of our guides help for the dangerous bits. We completed the trek in about four and a half hours, apparently we did well because we heard the next group took twice as long,but then it was a group of twenty and it had rained the day before so everything was very muddy, but we did feel proud! Do you grow any vegetables or fruit to eat? What grows in your garden? Have you gone trekking? Where did you go?

On our last day in Santo of course we did more snorkelling. This time we went to Million Dollar Point. During the second world war Vanuatu was used by America as strategic command base. When America no longer needed to be there, they wanted to sell their equipment to the French government, who, knowing America couldn’t take all that equipment back, said they wouldn’t buy it. They thought that the Americans would leave it behind. But the American army had other ideas, they built a jetty and sent all their excess tanks, tractors machines etc into the ocean, if they couldn’t take it no one would have it. That is why the area is known as Million Dollar Point as there was quite a lot of money tied up in that equipment.

We said good bye to Santo, we really enjoyed the country and loved the friendly and helpful people. We learnt a lot about their way of life and had a lot of fun in exploring their place. But the real adventure was yet to come. We boarded a little seven seater plane and headed for Tanna. This island is much smaller that Santo and in many ways a lot more isolated. There are no sealed roads on this island so getting around was very bumpy and took a long time. We stayed with a lovely couple called Tom and Margret who have some small bungalows they allow people to rent.

Our home on Tanna

Our home on Tanna

Last year Vanuatu was hit by a powerful cyclone, Tom said he lost all the roofs and a lot of other things, I was impressed by the work he had done to repair everything.

Naturally we went into the pristine waters to snorkel and met some very odd creatures indeed.

On this island I visited another village that prefers to keep to their traditional ways. Anni the wife of the village chief took us on a tour of her village and showed us the traditional way of making Laplap, a delicious dish made by grating banana, mixing with coconut meat and juice and placed in leaves and cooked over hot stones. She also told me how they read the jungle and use the seasons to know when to plant or collect certain foods. Like all villages they welcomed us with dance and song. The people in this village wear traditional dress so with respect for them I will just show you these images.

Near by is what Tanna believes is the world’s largest Banyan Tree. I read that it was as large a football field and I was very skeptical ( that means I didn’t quite believe it!). But I have to tell you it is true! It took me fifteen minutes to walk around.

That dark green patch is the tree!

That dark green patch is the tree!

Now it is hard to get a scale in this picture but if I stand next to one of the little sections you can see that the first branches are just starting to show.

Tiny section of the tree

Tiny section of the tree

But of course there was only one thing I really wanted to see on Tanna and that was Mount Yasur. The old man of the island the world’s most accessible active volcano. I was hopeful that we would have a clear night in that it had rained quite heavily the night before. Yay, no rain! Now volcanoes have certain levels we needed to be aware of

  • 0 – Low activity not much to see
  • 1 – Normal Activity no real danger
  • 2 – Moderate to high with intense activity visitors permitted but danger exists
  • 3 – Severe activity dangerous – no visitors
  • 4 – Major eruption extreme likely hood of danger to population

Of course I didn’t want us to be put in danger but level two would be nice!

 

The volcanic dust plains

The volcanic dust plains look closely and you might see some extreme skiing going on.

Being a volcanic region there is a lot of geothermal activity. Here a local woman is showing me how she uses the hot springs to wash her clothes and also to cook her food. she gives us some cooked banana to try.

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Julia shows me the pool she is cooking her food.

Before we are allowed to enter the cars to ride up the steep road to visit Mt. Yasur, we need the permission of the tribal chief, thank fully he said yes!OLYMPUS DIGITAL CAMERA

We depart around five o’clock that way we will be on the mountain as the sun goes down and the view is said to be spectacular. We found out it is level 2 with high activity yay!

4wds took us most of the way and we walked the last hundred or so metres. It was of course cold and very windy but how AWESOME IS THIS! to be on top of an exploding mountain a real live volcano, whoo hoo! Watch as the spectacular display develops as the darkness descends.

We watched this fantastic experience at a safe level about 600 m from the crater for about an hour and a half. Nothing will make me forget the whoosh and sound as the crater seemed to breathe and then belched rock, gas and heat continuously. It was truly mesmerising. But sadly all too soon it was time to descend the mountain. Ah, but I have movies! So I can relive Mt Yasur over and over again! Have you seen the Earth in its raw power? What did you see, where was it?

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These were just some of the highlights of our time on Vanuatu, there were a few other adventures and events that took my breath away but the sun has set on this holiday. We are now planning another.

I shall share more in class. While it is fun to travel it’s good to be home.

July 26

In Term Two we were “Heating up!”

Science in term two was based on the chemistry of heating things up and how objects and material changed with heat.

We had some starter discussions on how livings things might keep warm.Screen Shot 2016-07-26 at 6.33.58 PM

This got us thinking of how we could keep warm, if we were very cold.

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After a short discussion on heat sources, areas that produce warmth or heat, we began looking for these sources of heat in our classroom. I added some extra ones for comparisons.

In our search we needed to decide on a heat rating was the object warm, hot or very hot. We shared our investigations and recordings to see if our team mates agreed or disagreed.

We learned that heat (thermal energy) can be classified according to its form and there are three to know and understand.

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Our next challenge was to put some understandings into action. We really enjoyed our investigation using metal spoons. In teams we used a metal spoon to heat up at our choice of six different heat sources. Areas to be accessed included – urn/kettle, cups of hot water, hair dryer, candle, white board/other electrical objects, carpet, body heat, hot water bottle. We shared roles for heating and timing and to make our investigations fair, we used a stop watch to time the duration at exactly two minutes. That way we could compare the different types of heat. Warnings were given as science investigations can be somewhat dangerous, particularly given we were using a flame, metal can get very hot!

This investigation gave us lots to think about how heat might travel or transfer into or up objects. When could that be a good thing? Who would need this to happen? Why? When do we not want heat to transfer quickly or at all? Do we know of any situation where they have seen this?

We also challenged ourselves to decide what type of heat source it was chemical, kinetic or electrical.

Recording our observations gave us a chance to sharpen our science line drawing skills.

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During this activity a few of our classmates did get too excited and forgot the warnings, burning themselves on very hot metal spoons. It seemed appropriate that we look at warning signs and posters checking to see what essential information we may need to include if we were to warn people of, very hot sand, hot cup of tea or a hot frying pan. Working with a partner we used our negotiating skills to plan and display our thinking.

We got a chance to explain the message behind our posters before we placed them on display.

Our final investigation made us think carefully about variables. We wanted to know what would affect the heat of a spoon in a cup of hot water.

I thought we showed critical scientific thinking as we suggested that these things would affect the temperature :-

  • type of material spoon was made out of
  • the time the spoon was left in the water
  • the temperature of the water
  • the temperature of the spoon
  • the size of the spoon

Teams worked together to plan our investigation.

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Essentially we needed this information. We were able to use a wooden, plastic and metal spoon to compare results.

Unfortunately Ellen was so busy making sure we didn’t have any injuries this time, so she wasn’t able to visually record our work.

However it was interesting when we completed our work to find that most of our predictions were accurate. One team took a very long time to complete their plan and by that time the hot water had cooled down quite a bit. Time did play an important role in the hotness of the spoons, however so did the material that the spoon was made of.

This gave us lots to think about when using objects near heat. Many students could see connections to tools used in their families kitchens. Wooden spoons are very useful when stirring hot food. Perhaps plastic tools could be used too. Some discussed how they have metal tools but handles are wooden, that made sense given our new understandings.

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Our last opportunity to put our new learning into action was to identify heat sources in a picture. It was amazing how many were in one little scene from a family’s kitchen and outdoor area.

 

What did you enjoy most about the Heating up unit?

What questions do you still have about heat?

How have you used your new knowledge on heat lately?

How did you go locating all the heat sources?

 

April 13

Feathers, Fur or Leaves

Getting Started

Being Observant – making decisions

This term as budding scientists we investigated the biological sciences where we sharpened our skills in classifying things around us.

We began by sorting things into living and non-living groups. We checked out some copies of scientific notes that were incomplete and made some decisions based on what we thought we knew and what we read.IMG_0280 IMG_0281 IMG_0282

We started our own collection of natural objects and created our Natural Science Table which is a very interesting place indeed.IMG_0274 IMG_0278 IMG_0275

We had to decide what would we look for that made something classified as a living thing. We had lots of discussion using various images of different living objects.IMG_0223 IMG_0225 IMG_0222

Once we had a go at sorting out living things, we used a table to record our observations of similar features. We learnt that sometimes a graphic organiser is a useful way to keep track of our observations quickly and  that makes it easy to interpret/read  and understand our data.

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It was easier than we thought. Amazingly enough in maths the next day we used tables to work backwards for some problem solving. We started seeing tables being used in lots of other places.

We shared our team findings and as a class we discovered that..

All living things

  • move
  • grew
  • reproduced
  • ate/produced waste
  • breathed

Once we had these criteria to use in working out the difference between Living and Non-living things, it was important to look closely at the different special features living things may have.

Being Taxonomists

There are many hundreds of thousands of different animals and plants on our planet and finding ways to sort life can be tricky. When Scientists come across an animal, they need to classify it by trying to work out which animal/plant group it belongs to. One way to do that is to have different categories of features. They use a series of questions and follow the path of their answers until they get to a group name. This is called a key. We used a simple version of their branching key to see if we could identify special groups of animals.Branching Key

By observing closely and answering yes no questions we can locate the animal group.  For example try this specimen

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Does it have bones inside it’s body? – No

Does it have a hard body?- Yes

Does it have antennae? – Yes

Does it have more than two antennae? – No

Does it have six legs? – No  Its a Myriapod

It sounds easy enough and we found that sometimes we weren’t sure of the correct answers and that led us down the wrong track. Does that mean we need to observe closely?

Taxonomists in the field.

We had a go at being field biologists and as a team went out in search of leaf litter. Our job was to collect a sample of damp leaf litter and soil and observe the sample closely to identify which animal groups we collected.

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Before we began we predicted the animal groups we would find. most teams agreed we would see insects, arachnids, worms, reptiles and birds.

Of course scientists need to be protected from dangerous substances, so we made sure we wore gloves and had eye protection.IMG_0247

Each team negotiated where they thought they would find a suitable amount of damp leaf litter. Then we set off.. Sadly excitement got the better of some teams and they couldn’t help running to their areas, an impulse scientists would be able to manage. They’ll think differently next time… they agreed.

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Once we had collected our samples it was time to investigate the living animals we may have scooped up. Before we analysed our specimens we recorded the date and area the sample was found. An important part of collecting data.

Using magnified glasses we observed closely to identify what we had trapped. We tried using the branching key to give the animal its proper scientific name. We made sure we recorded our data using a tally as we identified them.IMG_0261

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There was a lot to do and it took a couple of lessons. As we were concerned for the safety of the animals we trapped, we completed the final analysis the next day.

Sharing and collating data

It took a little time to finalise and collate our individual teams observations and there was much scientific discussion using and checking the animal group with the branching key.IMG_0256IMG_0259

Each team tallied their collection. As a class we combined the findings.

We found

  • 10 arachnids
  • 16 myriapods
  • 83 insects
  • 2 annelids

From this result we could make a scientific statement which is a claim based on our data, which is our evidence.

The students had a go at interpreting the data and making their claim.

“Probably the most animals in our school is insects an we have proof. The annelids is the least.”     Wil

“The most is the insects probably because we found the most 83.” Zahra

We think there are more insects the myriapods but more myriapods than arachnids. There are more arachnids than annelids. But in our sample there are more insects.”  Fin

” We think that annelids are the least animals in the school and there are more insects, some myriapods and arachnids because there are 83 insects, 16 myriapods 10 arachnids.” Lakeisha

Learning how to classify living things does need lots of scientific thinking, sorting and observation. As a final check of our skills I gave students some images and asked them to create a poster that sorted the objects into groups.

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Some things to think about…

What did you think about the study of Feathers, fur and leaves?

What activity did you find the most interesting or enjoyable? why?

What activity did you find the most challenging?

What are you still wondering about?

November 24

Kidpix Animation

alien

Earlier this year we learnt a lot about our nearest cosmic neighbours in our science investigation on space and beyond. For an integrated science/art/ICT and collaborative learning project, students were asked to tell a space story through animation. They used the creative drawing tools in Kidpix to create their action. Working in pairs they began by using a storyboard to plan and negotiate their ideas.

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Once they knew the basic outline of their story they experimented with the tools in Kidpix to create their artwork. Crashes and explosions seemed to be quite popular, with rockets and space travel included in many themes. I did ask for some science, but fantasy was okay too. As we soon discovered, this work would require many hours of painstaking and precise movements while carefully shifting pieces to get the desired effect.

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It also needed a great deal of collaboration and negotiation to agree to get the animation just right.  We learnt that it would take a lot of slides to get just few seconds of action. Once we believed we had enough slides, the task of downloading each one, changing transitions and time took quite a while. There was an amazing amount of problem solving along the way.

 

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Importing our animation into iMovie meant we could learn to add Titles, transitions and sound effects. Even though this project took a longer time than we originally planned, it was worth it. Apologies to the producers but I had to save their mp4 movies as smaller files so they would play here and in doing so some of their animation has been clipped. If parents want a bigger better copy send in a USB and I’ll copy it for you.

Got your popcorn ready?

Something to think about.

What did you think about making your own animation?

What problems did you have to solve along the way?

What would you change if you could do this again?

Which movie captures your attention? 

September 20

Congratulations

DSC08556We are proud of our four students who put their Space Board Game into The Sir Mark Oliphant Science awards. Last Thursday night they attended an awards night at Grange School and were presented with a certificate and a fabulous medal for their participation. Congratulations for your efforts Emilia, Kate, Tia and Alicia, you look so proud. Science needs enterprising thinkers like you.

The board games are now on their way home I hope you all enjoy playing them with your families.

What do your families think of playing your games?

Were they able to answer any of your questions?