Science Day

On Thursday year 3 to year 8 went to Strath Taieri school for a science day. Dave was from Otago University, he taught us about chemistry. Here we are making elephant toothpaste. Watch the video to see what happens

The Human Digestive System

Room 1 is investigating the amazing human body at the moment and today we did one of the most DISGUSTING experiments/demonstrations we have ever done! Why don't you give it a try!!

The Human Digestive System Demonstration

(or The Only Time It’s Ok To Poo In The Classroom)

Aim
To demonstrate the working of the human digestive system from eating to getting rid of the waste

Materials
Food (Bread and spaghetti)
Bowl with masher
Saliva (water/detergent)
Plastic bag
Stomach juices (vinegar)
Bile (food coloring)
Stocking
White tray or plate for putting samples on

Method

Step One – Into The Mouth
Chewing something – place the food in a bowl with a small amount of water and detergent and mash  it up.

Step Two – Into The Stomach
Transfer the food into a plastic bag and add vinegar. Use your hands to simulate the motion of your stomach muscles and break down the food in your ‘stomach’.

Step Three – Into The Small Intestine
Add the food colouring and transfer the digested food into the stocking. Squeeze it through your ‘small intestine’, allowing water and nutrients to leak out through the sides of the stocking.

Step Four – Out The Other End

Squeeze the undigested food (that which can’t be made small enough) through the ‘small intestine’ and into the large intestine. This is where the remaining liquid is sucked out from it and it becomes more and more solid. Push the undigested food all the way through and then out the anus (hole in the stocking), and there it is - poo!

Stu and Charlotte's Hand Challenge

This is our poster about the hand. We made this poster for a challenge that Mrs Weir, our teacher, gave us. We had to explain what the human hand does and why it is so important and useful. We had to use QR codes that we scanned with the tablets to find useful websites with information.

Ben and Shannon's Hand Challenge

During writing and science we did a challenge that was called "give me a hand". We had to make a poster that explained what are hands and how do they work. Our question was "why are our hands some of the most important tools we have?". We used QR codes to help us find our answers. We learnt that we need thumbs to help us do things like picking up things, if we have no thumbs it is hard to do stuff. 

Jade and Jor'jah's writing & science challenge

 

 

This is our science challenge. We wrote our explanation to answer the question, the question was "why are our hands some of the most imports tools we have?" We spent lots of time thinking about this. We used QR codes to get onto websites and videos. We planned out our poster before we glued most stuff on and we drew some pictures of  a bone and a skull. We worked really hard on this and we hope you like our poster that we worked hard on to get it as perfect as we could in the time we had. This science & writing was a real challenge!

Libby and Jakobs Why are our hands so important poster

Today we had to write and design a poster that showed why the human hand was so important to us. We learnt how to work well together as well as how many bones are in each finger and all the different things that we can do with our hands. It made us realize how amazing and useful our hands are in every day life. We used QR codes as a treasure hunt to find useful links for information and diagrams. We really enjoyed this project.

Acids and Carbonates

Today in science we learned about acids and carbonates. We worked in pairs to combine different substances and recorded our observations on a table in a shared document on Google Drive.
Here are the substances we had: washing powder, chalk, lemon juice, eggshells, orange juice, tea, sugar, vinegar, baking powder.

We experimented and observed, recorded and checked. Then we were able to decide what happened when we mix an acid and a carbonate - they make gas! We knew this because all the acid and carbonate mixtures bubbled or fizzed (although the eggshells didn't work well - we think they needed to be ground up more than we could manage) showing the gas that was created.
Here is Jakob's diagram of which substances were acids and which were carbonates:

Can you spot the two tricky ones that were neither an acid or a carbonate?!

Bubble Boats

Cloud in a Jar

Today we wanted to make a cloud in a Jar. Impossible you say. Well it's not!

To make a cloud in a Jar you will need...

- A Jar

- Matches

- Warm Water

- An ice pack

- A piece of black paper 

We put about one third of a cup of warm water into the jar. Then we lit a match, blew it out and dropped it in the water. We then quickly covered the top of the jar with the icepack for two minutes. We could see the cloud start to form in the jar. Then we released the ice pack and the cloud came out. the top! 

It was a lot of fun making clouds in a jar.