Thursday, 23 May 2013

Gooey Marshmallow Sandwiches

Our inquiry this term is called "What's Hot?".  We will be investigating heat and how heat can change things.

Today we read this recipe in a Junior Journal and tried it out ourselves.  

First we predicted what would happen and what our sandwiches would look like.  We wrote these on our experiment sheet.  Here are some of our ideas:

"I think it will go all gooey and slimy" - Rayan
"I think it will go burnt" - Luca
"I think it will melt and get squishy and get runny" - Holly
"I think it will go hot and get gooey" - Mia

Then we made our sandwiches with biscuits and mini marshmallows.

Then we put them in the microwave

When we took them out of the microwave, we looked at them to see how they had changed.  The marshmallows had got bigger and they had melted.  Here are some of the observations we wrote.

"The marshmallow stuck to the biscuit.  It looked like chewing gum." - Krupal
"It looked like gum and it was hot" - Aimen
"It squashed" - Kingston
"It went all over the edges of the biscuit" - Harrison
"It went all gooey and squishy.  It tasted yum." - Lucy

Then we got to eat them - yum! They were delicious!

Here is one of our experiment sheets.  What great predictions and observations we made.  We are becoming fabulous scientists.

We talked about why we thought the marshmallows had changed.  We thought the microwave heated the marshmallows up and then melted them.    We have seen the same thing happen before at home with chocolate and butter.

If you would like to try this at home, the recipe is at the top of this blog post.  We used plain biscuits, but we think they would taste even yummier with chocolate biscuits!  

Monday, 13 May 2013

Super Science Week

Last week was Science Week at our school.  Lots of children in B4 brought in a science experiment to share with the class.  We also had a fun Science Swap on Thursday afternoon where the whole school was mixed up and everyone went to a different class to do a fun science experiment with another teacher.

We had lots of great discussions about the science experiments we saw.  We talked about what we could see and why we thought it was happening.  There are lots of good thinkers in B4!

Here are some pictures of the amazing experiments that the Young Scientists in B4 brought in to share with us.

Fuard, Blake and Ronan brought in some amazing volcanoes that they had made in the holidays.  They used vinegar, baking soda and food colouring to make lots of bubbly "lava" come out of their volcanoes.  We learnt that when vinegar and baking soda mix, they make a gas called Carbon Dioxide. This gas makes the bubbly lava.  This is the same gas that is in fizzy drinks!

Rayan brought in an interesting experiment that used water, a mirror and a torch to make a rainbow on a piece of paper.  We discovered that the light from the torch is split into rainbow colours when it shines through the water.  This is the same way that a rainbow in the sky is made when the sun shines through raindrops!

Nikki made some different structures using toothpicks and jellybaby lollies.  We put toy cars on top of the different shapes and observed whether they could hold the cars or not.  Her experiment showed that triangles are stronger than squares and we learned that this is why you can often see triangle shapes in bridges and buildings.

Micaela made some cool rainbow patterns in milk.  She put some drops of food colouring in a plate of milk and then added a drop of dishwashing liquid.  She explained that there is a layer of fat on top of the milk and the colouring sits on this.  When you add the dishwashing liquid, it breaks up the fat and the colours swirl.  We loved seeing the colourful patterns it made!

Mia showed us how you can blow up a balloon without using your mouth!  She put vinegar and baking soda in a bottle and put a balloon on top.  When the vinegar and baking soda mixed, they made a gas called Carbon Dioxide.  When the gas tried to escape from the bottle, it blew up the ballooon!

Lucy showed us another interesting way to blow up a balloon.  She put a balloon on the top of an empty wine bottle and put the bottle in a large container.  When we added hot water to the container, the balloon got bigger!  We had lots of interesting discussion about what was happening.  We discovered that when air gets warm, it expands.  The hot water made the air in the bottle expand and move up into the balloon.

Luca brought in his brainbox electronic set and showed us what he knew about electrical circuits.  He made a circuit that lit up a light bulb and made an alarm go off!  The circuit had to be complete and needed a battery to work.

Aimen brought in another balloon experiment.  She glued a water bottle lid and a CD together, then she blew up a balloon and attached it to the lid.  As the air pushed out of the balloon, it made the CD move across the table.  

 Paige showed us a way that you can change a flower's colour.  She put some white flowers in cups with coloured water in them.  Through the day the petals of the flowers started to change colour.  We discovered that the coloured water was sucked up the stem of the flower and into the petals.  This showed us that all parts of the plant need to drink water, not just the stems and leaves!

Mason made a tornado machine using two water bottles!  When you turn it upside down and swirl it around, it makes a cool water tornado.  We had lots of good discussion about whether it would work with one bottle or not and we decided that the second bottle made the tornado faster and bigger.

Harrison brought in a cool experiment that explained air pressure.  He blew up a balloon and then put it on top of a bottle of water.  The bottle had a straw poking out of it.  As the balloon went down, the air from the balloon pushed the water up out of the straw!  When the balloon was empty, the water stopped moving.  We really enjoyed watching his fun experiment!

Krupal found an idea for a balloon rocket in a cool science magazine.  His rocket zoomed across the classroom on a piece of string.  We talked about how the air in the balloon was like the big boosters on the bottom of a rocket, pushing it into space.

Here are all our Super B4 Scientists with their Young Scientists Awards.  What clever people we are!  Thank you to all the parents that helped to find and make science experiments over the holidays.  We had a lot of fun and very good learning and discussion.

Wednesday, 8 May 2013

Excellence Awards

Each term our principal Mrs Henderson gives out Excellence Awards to one child in each class who has been showing excellence in all of their work all term.  It was a very hard decision for Mrs Harrington because there have been so many great workers in B4 this year, but Mia was given the award for Term 1.  Here are some photos of her receiving her award at assembly on Monday.  Well done Mia!  I wonder who will get the B4 award for this term?