# Science Week in Senior Infants!

We have loved doing lots of experiments this week for science week! We have been busy exploring different materials that float and sink. We predicted, tested and recorded our results. We especially loved doing the “Dancing Raisins” experiment and designing our own boats! We tested our boats by counting how many “passengers” it could hold before sinking.

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# Exercise and your Heart

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In fourth class we have been busy testing our heart rates. Before exercise we tested children’s heart rates using the heart rate monitor. After the exercise we tested them again to see if there was any change in their heart rates. The heart rate monitor told us how many times their heart beat per minute (bpm). Here are some of the results we collected.

Results

Kalya                Before exercise 96bpm

After exercise 120bpm

Oliver                Before exercise 90bpm

After exercise 130bpm

Declan              Before exercise 78bpm

After exercise 135bpm

Oscar               Before exercise 150bpm

After exercise 200bpm

Conclusion

We found out that your heart rate changes after exercise. It beats faster. Oscar had a high heart rate before exercise and we know this was because he was nervous and excited about using the heart rate monitor. He was also doing a lot of talking at the beginning!!

For the next few weeks we are hoping to use the heart rate monitor before and after P.E every week.

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# 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

# What a Great Science Exhibition we had in Nov 2017?

Parents, relatives, Friends and Intel Judges came and viewed our experiments. All classes were represented. They commented on how articulate and knowledgeable the children were.

# Butter v Margarine 5th Class Room 6

Which should we use butter or margarine and why?

1. First we conducted a survey of the butters and margarines used in Fifth class room 6.
Then we made a tally chart and bar chart displaying our findings.

2. Then we identified the ingredients each of these contained. We made a stacked bar chart of these ingredients.
Some margarines contained 9 /10 ingredients including preservatives, colouring, Emulsifiers, acidity regulator
Findings:
We were shocked to discover that Flora and Benecol contained the exact same ingredients as stock margarine even though they were over 4 times the price.

3. Then we investigated which butter or margarine would go off first. Findings:
a) Pure butter went mouldy after 10 days.
b) However, after 3 months none of the margarines have gone off.

4. Finally we made pure butter by shaking double cream.
Try this at home.    It is so tasty!

# Magnets – ASD Class

For this year’s Science Exhibition we combined sensory play, maths and science into one fun activity! We each took turns to find hidden objects in a tray filled with pasta and tested them to see if they were magnetic or non-magnetic. We sorted the objects into two sets and recorded our results on a data chart. We all had great fun using the horseshoe magnet and investigating what is attracted to it. Lorchán did a fantastic job presenting our work to parents in the hall.

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# The Heart

We have been learning all about the heart in fourth class. Here are some interesting facts about the heart.

Did you know?

• The heart pumps blood to all parts of the body.
• The blood brings oxygen to the muscles.
• Heart rate increases with exercise so that more of the oxygen carried in the blood can reach the muscles.
• The fitter you are, the quicker your heart rate returns to normal.
• An adult’s heart rate is around 70 beats per minute, and a child’s is a bit higher.
• A mouse’s is about 500 beats per minute, and an elephant’s is about 25 beats per minute!
• Our hearts are pumping at a regular rate. This pumping can be felt by placing fingers across the pulse point at the wrist or the neck, and the rate can be counted.