Float or sink?
We made guesses as to which items we thought would float or sink.  We wrote down our answers and tested them out.  We were very surprised at some of the items, the wooden block floated but the wooden dice sunk. We were very surprised that the rubber sunk we all thought it would float! Afterwards we had plasticine to make our own floating vessel. It was very tricky but we had fun.

Telephones
We experimented with polystyrene cups and string to make a device that acts like a phone. A hole was made in the bottom of the cups and string was knotted at the bottom to stop it coming out.  We held the string tight and spoke into one end whilst the other person listened.  It was very funny with some of the things we heard but had not said!

Can you hear as well as a dog?
We tested our hearing to see if we could hear as well as a dog.  We wore a blindfold and used only our hearing to find the person making the noise. We enjoyed finding where the noise came from and found out that dogs can hear sounds before we can and that's why we have them as guard dogs.

Volcanoes

We made predictions about what would happen when we put vinegar on top of bicarbonate of soda. Some of us got it right.  We put it in a cup first and saw it bubble, then we tried it in a bottle because it has a smaller top to see if it would flow better. It did! We decided to use the volcano out of plasticine from the previous science club group. They chose plasticine because it is waterproof.  The volcano was put into a bowl to make sure it didn't make a mess and the bicarbonate was put in first followed by the vinegar.  We were amazed at how much the volcano erupted.  We decided that if we added to the funnel by making it narrower it might have a better eruption.  Mrs Davies added all the bicarbonate of soda and the vinegar to the volcano quickly and the result was amazing.  The smell was terrible but we had a lot of fun.

We investigated which liquid would make a fresh egg float.  We had 4 glasses of water and put the following in them and stirred:-

Glass 1 - sugar
Glass 2 - flour
Glass 3 - salt
Glass 4 - nothing added

We all made predictions as to which glass the egg would float in, what do you think?

 We added the eggs slowly into each glass and we were very surprised at the result. Did you guess correctly?

The glass with the salt water made the egg float.

We also found out that we can test the freshness of eggs by putting them into a glass of water.

Floating - stale egg

Sinking - fresh egg

Electricity

We had a lot of fun experimenting with lighting light bulbs and making a buzzer sound.  We used wires, crocodile clips, batteries, battery holders, light bulbs, light bulb holders and buzzers.  We lit 1 bulb and then tried too light as many bulbs as possible with the batteries.  We could manage 3 bulbs on 1 set of batteries but found that the light was much dimmer.  We added pieces of decorated pieces to the buzzers and watched as they spun around.

Guessing the material

We had a selection of materials in a bag and we had to describe what it felt like for the others to guess.  We were all very good at guessing because the clues that we gave were so precise.

Mrs Dyas put a blindfold on us and we had to see if we could hear as well as a dog. We found this quite hard, another child made a noise in the hall and we had to walk towards the noise.  Dogs can hear noises much quicker than we can.

Then we had a go at a telephone made from cups and string.  It was a lot of fun listening to our friends talking through a cup and being able to hear it.

Take a look at our photos below.