Making Marshmallow Sandwiches

We have been learning about heat.  We have been thinking about how heat can change things.

Today we did an experiment.  We made some yummy marshmallow sandwiches.  We looked at Mrs Harrington's class blog and saw the children in B4 making them.  We thought it would be a tasty thing to try for ourselves.

You can check out the B4 Explorers blogpost and "Marshmallow Sandwich" recipe by clicking here:

First we put  B4's Blog Post up on the projector screen in our classroom so that we could read the instructions for making Marshmallow Sandwiches.

What did we need to make 

Marshmallow Biscuits?

Marshmallows.
Chocolate Thin Biscuits.
A plate.









We wondered what would happen to the marshmallow and chocolate biscuits when we heated them up in the microwave.

What did we predict would happen?

"I think the marshmallow will rise up high."  - Ashton.
"The marshmallow might go runny and goey." - Sylvia.
"I think the pink marshmallows will change to white." - Taylor.
"I think that it will take 2 hours to get hot." - Sriraj.
"The marshmallow will melt and be very hot." - Eva.




Next we made our Marshmallow Biscuits!  We had to squish a marshmallow down in between 2 chocolate thin biscuits.  We had to make sure the chocolate was on the inside of our 'sandwich'.

Yum!

It was a bit tricky because the biscuits on the top kept falling off.  

We wondered if we needed smaller marshmallows so we cut them in half.

We put them in the microwave for 20 seconds

All ready to be heated up!

We all counted to 20 while we waited!

When the Marshmallow Sandwiches came out of the microwave we had a look at them to see if they had changed.

We decided that after the marshmallows had been heated up they looked puffy and fat.  They looked gooey and runny.

What else had changed?

The chocolate had changed too!  It was gooey and sticky.

Finally we got to eat them our yummy marshmallow biscuits.  We had to let them cool down a little bit so that the marshmallow didn't burn our tongues!

"The marshmallow is stretching," said Joshua.

"It looks like chewing gum!" said Anika.

"My marshmallow looks all stringy!" said Ashton.

"Mrs Graham look! Sticky Marshmallow!" said Jerry.

"It tastes so warm and yummy" said Natey.

"It tastes different. I can lick the chocolate off" said Rohan.

"My Marshmallow has gone all flat" said Charlotte.

Yum! Yum! Yum!

You might like to try making these at home.

Remember to get a big person to help you - and be careful! Remember the hot marshmallow can burn.