Making Orange Candles...

This week room made some ORANGE CANDLES.

We hollowed out the oranges leaving central pith to create a wick.  We used Canola Oil as the fuel to burn the candle.
We were interested if other substances other than wax could be used as a fuel to keep the candle burning.
We noticed that when the candle had been burning for a while the level of oil was reducing.

Remember if you try making an orange candle at home, remember to have an adult to supervise.

CANDLE OBSERVATIONS

SCIENCE - I OBSERVE, I THINK, I WONDER...

This week room 3 students have been observing candles and wondering how and why  a candle burns.

We observed carefully the flame, different parts of the flame and recorded our observations, our thinking and also some wonderings.

For a candle to burn, a heat source (commonly a naked flame) is used to light the candle's wick, which melts and vaporizes a small amount of fuel (the wax). Once vaporized, the fuel combines with oxygen in the atmosphere to ignite and form a constant flame.

DANCING RAISINS Part 2

Dancing Raisins Part 2...

Designing a FAIR TEST

Room 3 decided whether to test density of an object or test the level of carbonation of different sodas.

A fair test needed to be set up.  All measures needed to be the same with only one variable (Change)

If testing the different soda, students needed to have the same amount of raisins, same level of liquid, same type of cup, same temperature.  the only change would be the type of soda.

Some groups were keen to test different types of seeds, different types of dried fruit, different types of soda.

We planned our Fair test, made some predictions, tested the soda or different type of dried fruit, recorded the observations and came to some conclusions..

Questions and consideration for text time around:

How can we measure or record the results better - Do we need a timer or a video?

Does the amount of sugar in the soda effect the amount of carbonation a soda can hold?

Can we carbonate our own water?

DANCING RAISINS...

Room 3 are continuing to make scientific observations.

I SEE     I THINK     I WONDER

We have been discussing how scientists observe :  using our senses, looking carefully, listening, smelling, tasting and touching.

On Tuesday we started with a handful of raisins in a cup of water - we noticed the raisins sunk to the bottom of the cup.  We noticed there were some tiny bubbles of air around the raisins.

We then repeated the experiment but this time with soda water..

Observe ..Observe.. Observe..

The raisins began to rise and sink, and also jiggle around on the bottom ..dancing.  We saw lots of bubbles surrounding the raisins

What was happening and why was it happening?

Discussion:
1. What do you think will happen to the raisins when the water runs out                 of carbonation?  

2.  Why do you think the fizz tastes flat after it has been out for a while?

3.  What is carbonation?  How can you tell it is in the liquid?. 

4.  Define Density:  Density is the amount of mass per unit of volume.

5. Which is denser: raisins or the liquid? How can you tell?  
    The raisins are denser than the soda pop because they sink.


6. What happened to the raisins? Why?


WHERE TO NEXT?
What would happen if we used different objects eg. apple seeds, chick peas, pumpkin seed..
What would happen if we used different carbonated liquids  - is coke more carbonated, what about baking soda and vinegar?
How long would the soda water 'push' raisins up and down?
Does the temperature of the liquid make a difference?

Room 3 Students are now designing a fair science test to test the ideas above ... stay tuned to check out what happens next.

2015 Speech Competition

Congratulations to all of our fabulous students who worked really hard on producing quality speeches and presented them with confidence.

Congratulations to the following Year 5 Finalists:

Paradise Khan - Manakitanga, Caring for Others

Charlotte Schweier - Why We Shouldn't Have HOMEWORK

Te Atarau McGee - Michael Jackson

Neo Higgins-Ohlsen - Why I like coming to school.

We had a range of topics in our class speeches ranging from dinosaurs to hunting adventures, Rugby, Pets. animals, LEGO and Minecraft.

 The year 5 Speech finalists

Neo, TeAtarau, Charlotte and Paradise

Year 5 & 6 Speech Cup Winner - Charlotte

Lake Rerewhakaaitu School Climb our Hill...

A beautiful, crisp winters day blessed us as our school all walked up Rerewhakaaitu Hill.  The impressive mighty Mount Tarawera silhouetted against the blue sky kept a careful watch on us as we all wove through the farm tracks to to the top.  From the top we were lucky enough to see Mount Ruhepehu and Ngaruhoe in the south capped with white snow,  Mount Edgecombe to the north and the mirror like lake or Lake Rerewhakaaitu below us.

I OBSERVE 

I THINK

 I WONDER

Today Room 3 became scientists using our powers of observation!

Miss Coleman brought in some Huhu Grubs for us to look closely at.  

Our first task was to look very closely, making careful observations at the grubs and record our noticings...

We needed to think about colours, shape, textures, smells, sounds, movements and changes.

Some our findings were: It was bumpy, it looked slimy or wet.  It was moving, it was wriggling.  It expanded and contracted.  It has black substance coming out of it.  It had tiny spikes coming out of the white.  It had rolly rings up and down its body.  It was flexible. It was 4 cm long.  The grub reacts when we touch it by shrinking.

We then recorded what we think...

"I think it is alive because it is moving"  "I think the rings might represent its age"  " I think that the front of the grub is its mouth where the nippers are"  "I think the little spikes make it move faster" " I think it has a tail and a mouth" 

"I think when it extends and shrinks up this is how it moves"

Then we recorded our wonderings...

I wonder if the Huhu grub is related to the Huhu beetle?  Where does the Huhu grub live?  Why are they different colours?  How big do they grow?  How long do they live for?  Why do they have tiny holes?  What do the little spikes do? Can Huhu grub see?  What do they eat?  Is there different kinds of Huhu grubs?  Can Huhu grubs be other colours?