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Quality street Venn diagram maths

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We filled 2 identical jars to the brim with snow and water and put on the lids to prevent evaporation. We then left them at room temperature to let the snow melt. It took a few hours but when it had fully melted we saw that the level of water was lower in the snow jar. This is because there's lots of air in snow.

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We conducted an experiment to see what would melt the ice the fastest. My predictions are on the first part of my whiteboard. I kept everything but what I used to melt the ice the same and used 30ml for each. I predicted that the boiling water would be first and control (nothing) last. 

As I predicted, boiling water was 1st, but warm water was second, salt was 3rd, chilled water was 4th, 5th was control and 6th was sand.

Boiling water was the first because when you heat something up in liquid form, the molecules have more energy. This is also why warm water was second - it did not have as much energy as boiling, but it had more energy than chilled water. 

Sand was the slowest because it’s a great insulator.  

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I went to the local park to find out which surface (including myself) would give the least friction and allow me to go down the slide the fastest. 

I predicted that the picnic blanket would have the lowest fiction, followed by me, cardboard, a towel, bubble wrap and rubber swimming caps.

The second picture shows my results. I was right about the blanket, but I switched places with a towel.

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I am making an experiment to find out which of the following items will keep the ice from melting to find out which is the best insulator. I am testing: wool, tin foil, bubble wrap, chilled water, frozen liquid and room temperature air.

I used 10g pieces of ice, identical boxes, all filled to the brim and sealed.

My prediction is that the frozen liquids will win the competition I predict control will be the worst.

RESULTS:

frozen liquids won as I predicted, in second place was bubble wrap, third was wool, I was wrong about control as it came fourth, tin foil was fifth and chilled water was definitely the worst. In addition, I measured it and the temperature was rising which means it’s a very bad insulator

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After learning about circles and practising drawing with a compass, Millie drew arcs to make a 6 pointed template, which she used to make a symmetrical snowflake design. We then changed the design so that it had a rotational symmetry order of 3, not 6.

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Creating symmetrical snowflake designs using the 6ths to keep to a hexagonal template.

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Starting our new topic based on the Snow Queen, collecting evidence of writerly devices.

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Streamlined boat

I had to make a streamlined boat that would travel across a water tray quickly, so I used a plastic bottle with a third cut off. I then used the third to make fins to cut through the water. After I put the lid back on to prevent water filling the boat,  I used a hand fan to push and steer it through the water.

My boat was a success because it had lots of air inside it which made it buoyant. Also, the smooth, curved shape is important because that makes it streamlined. The prow is shaped like a bottle nosed dolphin’s nose. I added fins because I was inspired by sharks. I did try adding a sail to capture more wind (push force) however, it affected the centre of gravity and made my boat capsize and sink. 

Then I tried out my mum’s ‘boat’ and it didn’t work at all. This is because my mum’s boat was just an unmodified mouthwash bottle and although it was buoyant it wasn’t as streamlined as my boat. 

I won!

22.10.20

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We did an experiment to discover how plant breath under water!

First we got a dish and filled it with water. Then I found a small pebble and a large (a fresh specimen) leaf and placed them both in, the pebble on top of the leaf to keep it submerged. We left the bowl in a sunny spot. After that we waited a few hours. Finally bubbles started to appear on the leaf! These were bubbles of oxygen which leaves give out as they photosynthesise. Normally we can't see this.

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I was making a Lily pad out of waxed card. We then stapled a green pipecleaner to the card. Then I tied twine on the bottom to act as roots. After that we put it in a tub of water with a sand base, anchored the roots and my modal Lily pad floated. I did this to learn how Lilys float which they do with a hollow stem and find out its adaptions.

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Millie composed her own piano piece for her friend.

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Predators in the Arctic and Antarctic have evolved to have lots of blubber under their skin which helps insulate them innthe icy waters.

I put my bare hand in ice water and could only stand 7 seconds.

Next, I insulated my hand by putting it in a bag full of lard. I made sure my hand was as covered as possible. I could keep my hand in the ice water for 6 minutes and 9 seconds!

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Penguins use special oils to preen their feathers to make them waterproof. We decided to use vegetable oil, card and water to see how this works.

The "feathers" that had no oil became soggy and waterlogged whereas the oiled "feathers" simply had water running off thier surface like a car window.

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Bird beak adaptations.

We did an investigation to find out which tools were most like different birds' beaks.

Pliers could crack open pistachios and peck marshmallow "fruits" whichbis most like a parrot.

Scissors tear marshmallows (shrew) like a bird of prey.

The strainer could seive the floating fruit loops (pond plants and insects) like a duck.

Chopsticks were best at picking out elastic bands (worms) from soil like a blackbird.

Tweezers were best a cracking open seeds to get to the delicious insides like a finch.

The straw was best for sipping water (nectar) like a hummingbird.

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Inherited traits bead strings

Millie discovered that she shares 7 traits with her mum, 9 with her dad and 8 with her sister. Theses included traits such as eye and hair colour, handedness, ability to roll her tongue, hair type, earlobe type and freckles. 

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To make a model of a DNA helix I used strawberry laces and coloured marshmallows to represent the backbone and the bases: Adenine, Thymine, Cytosine and Guanine. A (green) always pairs with T (pink) and C (yellow) always pairs with G (orange). The cocktail sticks represent the hydrogen bonds between the bases.