Active School Week 2018: Walking with a smile 2nd class.

Yesterday morning we  had a lovely walk in our local park.  We counted our strides  for a full lap and found out there were about 700 strides altogether.  Some clever minds then remembered that on average a young persons stride is about half a metre in length. They then calculated that it must be about 350 m per lap ! Smart minds and healthy bodies in 2nd class!

The Big Clean Up.

On Friday last 2nd class got to help  out with the giant cleanup operation on the school grounds. Together we took over a patch of ground and made sure that it was both litter and  weed free. We used litter pickers, shovels and brushes to complete our zone and we are really proud of our work.clean up1

2nd class visit Rathmines library.

Today  2nd class went to Rathmines library to see an exhibition. The exhibition was  called  “100 Days of Dogs” and it had lots of illustrations of different breeds of dogs. The librarian Eithne, was really friendly and she  talked to us about the illustrator Tarsila Kruse and the story behind the exhibition.  We had a  quiz and got a chance to read books about dogs. Some students got to read the book itself and when we finished we had a look around the children’s library. We had great fun.20180220_105913

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.

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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?

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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.

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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.

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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.

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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”.