# Sound in 2nd Class

Sound is an energy, caused by vibrations that makes sound waves.

We completed a dancing rice experiment to see sound vibrations. We made ‘String telephones’ to hear sound waves.

We investigated which material would be the best sound insulator. We measured how far away from the sound we needed to walk before the sound disappeared when blocked by each material. We predicted that the cardboard box would be the best sound insulator and we were right!

Some materials allow sound to pass through them easily. Other materials absorb sound.

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# Science in Senior Infants.

We have been experimenting and testing the force of water on objects by investigating things that float and sink.

To begin we collected a variety of items from around the classroom to investigate. As a class we predicted which items would sink and float in water. Next, in our groups, we took turns to test the items to see if they would sink or float. Lastly we sorted the items into two groups; sink or float and we recorded our results.

The second activity we completed was ‘Design a Boat’. Firstly we experimented with a ball of plasticine to see if it would sink or float and if changing its shape would make a difference. Then in our groups we tried to use the plasticine to design a boat that would float. If we were successful we tested our boat to see how many ‘passengers’ (dried peas) it could carry. After a few attempts some groups were successful! 🙂

The last activity we completed was an experiment called ‘Dancing Raisins’. We predicted what would happen to the raisins in water and in soda water and then observed the differences between the two types of water. We were amazed to watch the raisins begin to ‘dance’ in the soda water! Why do you think this happened?! 🙂

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# Baking ~ ASD Class

We had lots of fun today baking cupcakes. Each of us had a special job to do. Michael read aloud the instructions. Lorchán organised the baking equipment and ingredients throughout. Siluan carefully cracked the eggs and measured the flour using a weighing scales. Seán and Thomas mixed all of the ingredients together. Lastly, Ciarán spooned the mixture into the individual cupcake cases. Together we put the cupcakes in the oven and eagerly monitored the time on the classroom countdown timer. Once cooled down, we ate one delicious cupcake each and brought another home. We were happy boys and are excited to bake again soon.

# STEM Activities in Room 10!

We completed two light experiments last week to show the splitting and mixing of light/colour.

Experiment 1: We made rainbow spinners to show that when the rainbow colours are spun quickly, your eyes can’t keep up and the spinner appears white.

Experiment 2: We explored white light and colour by placing skittles and the outer circle of a plate. We added water and observed what happened. The colours moved towards the middle and created a whirl of colour.

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# STEM Launch with the Minister of Education

We were honoured to have the Minister of Education Richard Bruton launch the policy and implementation plan for STEM in education in Ireland. Minister Bruton had the chance to talk to come of the students about what they have been learning in science and maths. Here are a few pictures from the day.

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# 2nd class Investigates :The Science of Sound

Experiment 1: Count the Taps!

What were we investigating?

Do sound waves travel better through a gas or a solid?

What did we do?

We learned that the air that we talk through is a gas and it can be interfered with by things like the wind.

We tested to see if we could count a tapping noise more clearly if we listened with our ear on the desk.

What did we learn?

In a solid you can hear the sound waves clearly. We weren’t sure however, if they were clearer.

Experiment  2: Making Rice Jump

What were we investigating?

Can we see sound waves at work?

What did we do?

We placed some cling film over a bowl and then placed some rice on top of the cling film. We then banged a drum close to the rice to see if the sound waves could make the rice jump.

What did we learn?

Even from a distance away the sound waves travelled from the drum hit the cling film and made the rice jump. Even though they are invisible we can see the force moving the rice.

Experiment  3: String Phones

What were we investigating?

Can we make a “phone” to send a message from our class across the front of the school to Mr Scott’s room (Room 5)?

What did we do?

Step 1: We designed and made our own string phone’s and tested them to see if they worked.

One group tried putting two strings in their phone.(It didn’t seem  to work any better)

Step 2: We measured to see how far apart our phones stretched and we tested to see if the sound got weaker on the longest phones.

Step 3: We then made another test string phone 4 metres long and we tested to see if it still worked.

Step 4: We measured the distance from our classroom to Mr Scott’s using a trundle wheel. It was  21 metres and 61 centimetres window to window.

Step 5: We made our new extra-long string phone. We sent a group down to Room 5  to listen for the message and left  two children in our class to call  it out.  Nobody but the callers knew the message (It was: “ Ireland are going to win!”).

Step 6: We  decided to do a final test to see if we could “listen in” on the line between the two classrooms.

What did we learn?

We learned lots but the most important bits are:

• The string has to be pulled tight for the phone to work well
• Putting two strings on the phone might actually make it harder to hear a message.
• The quality of the phone does not diminish between 1 and 4 metres.
• On a very long string- phone the message isn’t as clear as on a short one but we were still able to  work  out the message that was transmitted.
• By attaching another string to the main line we can “listen in”.

# Science Week

Yesterday we had our first Science exhibition of the year. We had great fun showing all of our visitors our project on ‘Electricity’. Our question was ‘How do we get the light at the top of a lighthouse to shine?’. We figured we needed to make a closed circuit. We loved explaining about the various circuits we made, such as series and parallel.  We already can’t wait for the next Exhibition! Take a look at some of the pictures below.

By: Jack and Bailey

3rd Class Room 10