Pages

Wednesday, August 9, 2017

Learning how to read scientific reports

Kia ora
We are learning how to read and write scientific reports. We have been doing experiments and writing about them. This is a reading activity we did. We had to be able to match a wondering hypothesis with its thesis.

We are learning how to understand the structure and language of a report about a scientific experiment #3 Understanding that a hypothesis is a brainy prediction based on what you already know.
In this exercise you need to match a thesis with its hypothesis.  Use the ‘Fill tool’ to colour code the matching ideas.
                               Thesis                                                                      Hypothesis
I know this……                                                                         So therefore if I do this I think this will happen…
I know that a puddle of water is a small amount of water lying (usually) on the ground. I know that water is a substance which is found on our planet and that it can exist as a solid (ice), liquid or a gas (water vapour). I know that the main reason water changes from one state to another on Earth is because of  temperature -heat or cold. On Earth a sunny day is when there are no clouds, the sky is blue and the temperature is usually warm or hot.
I predict that when I mix vinegar and baking soda together that a chemical reaction will occur and that I will be able to notice this. I might feel hotness or coldness, notice smoke or bubbles, smell something, hear some kind of noise or  find that the taste or texture of the foods has changed.
I know that heavy things usually sink and light things float. However, container ships are heavy but they still float so there must be more things that have an effect on floating than just weight. Blu Tack is a squishy material that is quite light. It usually comes as a wide, flat strip but you can shape it into a round ball, a sausage shape, an O shape etc or you could flatten it out into a thin, wide shape like a leaf or saucer. Leaves usually float and ships look a little like a leaf shape.
I predict that when I take an ice cube out of a freezer it will begin to change back into liquid water (this is called melting) because it will no longer be colder than 0 degrees centigrade.
I know that an ice cube is water which is frozen. I know that that liquid water freezes into ice when the temperature reaches 0 degrees centigrade. An ice cube will stay an ice cube as long as it stays in a freezer.
I predict that if I make a puddle of water somewhere on the playground on a hot, dry day that the puddle will dry up and disappear quite quickly.
I know that everything we eat is made up of different kinds of chemicals.Sometimes when you mix different chemicals together they react with each other in different ways and the substances will do things that they didn’t do before (chemical reaction) and become different to what they were like before (chemical change). You will be able to notice things happening by using your 5 senses to  listen, smell, feel, look at and sometimes taste what is going on. I know that vinegar and baking soda are both food substances and I learned that they are chemically different
I predict that if I take some ice cubes out of a freezer and wrap them in different materials, I will find that one material will keep the ice cube frozen for longer than the others. This material would then have proven itself to be the best insulator.
I know that liquid water changes into a solid (ice) when the temperature reaches 0 degrees centigrade. I know that a freezer will keep water solid because a freezer’s job is to keep food at a temperature just below 0 degrees centigrade.
We are going to use Bluetack as our material. We will use the same amount of Blutack to make three different shapes. One will be a straight, rectangular strip of Blutack, one will be a compact, round ball and the third will be a rounded  saucer shape like a boat. We predict that at least one of these will float.
I know that insulators are materials that can be used to protect yourself from too much heat or cold. When we put clothes on because we are cold, the clothes are insulators which help our bodies stay warm. If you put insulating material like Pink Batts in the ceiling of your house, in the winter the Batts help keep warm air inside the house. In the summer, The Pink Batts help stop hot air coming into the house so they help to keep us cool. Many  food containers like Thermos flasks and Chilly Bins are made out of insulating materials to keep food hot or cold.
I predict that when I put some liquid water into a freezer it will change from a liquid state into a solid state (ice) because the temperature in the freezer will be below 0 degrees centigrade.

Friday, August 4, 2017

Learning how to write reports about a scientific experiment.

Kia ora.
We are having a science fair this term so we needed to learn how to write a report about a scientific experiment. Our teachers chopped a piece of scientific writing into bits and we had to sort them out into the right order. We had to match the structure clues with the correct sentences and paragraphs. It was tricky. When we were finished we used the report to carry out a floating and sinking experiment using Blutack.The Blutack wouldn’t float unless we squeezed  it into the shape of a boat. It was fun. Here is a picture.

Thursday, July 27, 2017

Foaming and Fizzing

Kia ora bloggers,
I'm back with a new blogpost. This term our schools focus is Up, up and away. At the start of the week my class did an experiment called foaming and fizzing. We had to taste the vinegar and baking soda separately and we also had to taste it when the vinegar and baking soda were mixed together. Once we had done the experiment we had to write a report on the experiment. Here is the report:


B
E
G
I
N
N
I
N
G
TITLE
Yuck and Yum!
QUESTION.

If we mix vinegar and baking soda together will we observe some kind of reaction?
THESIS.
Vinegar tastes sour and it is a liquid. Baking soda is a solid, soft white powder and it tastes salty and horrible. They are both food substances but based on their different taste, they must be chemically different. So, if they are mixed together, there might be a chemical reaction.
HYPOTHESIS.
We predict that when we mix vinegar with baking soda an observable reaction will occur. We might see and hear an explosion, fire, foaming, bubbles, fizzing or something else. The resulting mixture might look or taste different. There might even be a difference in the size of the materials.

M
I
D
D
L
E
EQUIPMENT
AND MATERIALS:
Baking soda
Vinegar
Container for mixing
Teaspoon for mixing
PROCEDURE
Step 1: Pour some vinegar into a container to a depth of about 2cm.
Step 2: Use a teaspoon to measure in half a teaspoon of baking soda.
Step 3: Mix with a teaspoon.
Step 4: Observe and record what happens.
OBSERVATIONS:
At step 2 the mixture started to fizz. A fizzing sound was heard, bubbles were seen to appear in the mixture and the materials rose higher in the container. At step 3, when the materials were mixed, even more bubbles appeared and the volume of the materials in the container rose even higher. When the mixture was tasted, the taste was unpleasant and it was similar to the baking soda.  


E
N
D
ANALYSIS
AND
CONCLUSION
The goal of this experiment was to see if an observable reaction would take place when vinegar and baking soda were mixed together. The result of our experiment prove that our hypothesis was correct. We predicted that there would be an observable reaction, and there was. There was lots of foaming and fizzing happening and bubbles appeared which means a gas must have been produced. A quick check online showed us that the gas was carbon dioxide.

Wednesday, July 5, 2017

The last week

Hola, or should I say adios?
This is the last blog post for Term 2.
I have had an amazing term learning about animals, doing new things and fantastic art. I would love to say all the things I did, but that would take too long. So instead, I made a little presentation that shows some of my work.

Friday, June 30, 2017

Zoofari

Kia ora
This week we went to the Auckland zoo on a Zoofari. We slept in the old elephant house where the elephants Burma and Kashin used to sleep. Here is a photo of a kukupa/kereru on Mrs B's head.
I am working on a report about servals and I saw one  but it was too quick to get a photo. It looked just the way I thought it would.Here is a photo of a tiger.

 Ka kite ano.

Wednesday, June 21, 2017

My Serval Thinglink

Hello bloggers!!! This term our school is focusing on all creatures great and small... So our class did animal reports. I did mine about a serval. I used a Thinglink to present my work.
Here it is:

Monday, June 19, 2017

Argument writing

Kia ora bloggers! For the past two weeks our class has been writing arguments for the speech contest. I wrote one with a buddy. My buddy was Lilly. Together we wrote an argument about why zoos are good. Sadly when it came to judging we didn't get chosen to go to Kaikohe. Instead Willow and Depla are going to Kaikohe. Here is my argument:
Why zoos are good

Have you ever been to a zoo? A zoo is a place where humans hold animals in separate enclosures so none of them will get hurt by each other and so humans can can come and see them. Well, I believe that zoos are good. Here are some reasons why.

Firstly, a zoo is like a sanctuary for sick or injured animals just like a hospital. Zoos have great vets to look after the animals. If you were an animal living at the zoo you would know you were going to be looked after. If the animals were in the wild they would die of sickness because there are no vets in the wild. Also, after the zoo vets have healed an animal, sometimes they release them back into the wild.

Secondly, they have breeding programs for endangered animals to increase their family. So none of the animals will be extinct. If the animals were in the wild it would be harder to find a mate to breed with. We need more zoos in the world to save exotic species. For example there are only 7,100 cheetahs left in the world. We need to save animals and  not let poachers keep on killing them.

Finally, zoos educate people about the beauty of animals. Every person should know about animals so they respect them ,understand them and don’t hurt them. And everyone knows if you want to know more about animals, you just go to a zoo.

So, I sure hope you agree with me that zoos are good because they are safe places for animals, they help bring more endangered animals into the world and they teach us all about our planet’s greatest treasure-the amazing life forms that live on our earth. C’mon people, let’s look after our zoos and help them look after the animals.