We investigated which butter or margarine would go off first. Materials
Zip lock bags
(Pure homemade butter, Dairy gold butter, Dairy gold Original
Flora, Low Low, Benecol, Heavenly Buttery, Stork margarine)
Pure butter will go off first because it has no preservatives.
Dairy gold original will go off second.
All other products should go off around the same time.
Method (Fair Test)
1. All butter/margarine products were purchased together in the same shop .
2 We used the same spoon.
3 One person conducted the experiment.
Using a spoon he/she took out butter and placed it into a zip-lock bag.
4 The same quantity of each product was placed in the zip-lock bag.
After 2 weeks pure butter went off – Black mold is growing on the pure butter.
After 4 months – February 20th 2018 none of the margarine’s have gone off.
Our Hypothesis is correct so far. Well done!
In Room 4, we have been very busy looking at how heat can change things.
We have discovered that when you make a solid hot, it usually turns into a liquid. We observed ice melting into water and we saw how jelly cubes melt into a liquid when you add hot water.
Because there are so many class birthdays in November in our class, we wondered if there was a way for us to melt our jelly cubes quickly. We decided to melt 6 big cubes of jelly and then melt 28 tiny jelly. We monitored our water temperature using a thermometer and we made sure that we used the same amount of water in each bowl. We all made our predictions, then our race began!
Last week in Rang a Trí we conducted a science experiment to investigate how long it takes for a sugar cube to dissolve in different temperatures of water. We brainstormed in groups about what we would need and what we would have to do. When all the groups came together with their ideas we combined them and made a plan. We gathered everything that we needed: thermometers, sugar cubes, plastic spoons, see-through plastic cups and hot and cold water. For a timer we used an online stopwatch on the whiteboard. We worked in six different groups. First of all we put 100ml of hot water into our plastic cups. We put our thermometers into the hot water and recorded the temperature of the water. Then we dropped our sugar cubes into the hot water and stirred them, and we began the stopwatch just as we dropped the sugar cubes in. We observed and recorded the time that it took for the sugar cubes to dissolve using the online stopwatch. After that, we reduced the temperature of the water by replacing 50ml of the water with cold water and mixing the two to make lukewarm water. We repeated the procedure and recorded our results. Finally, we used 100ml of cold water and repeated our procedure and recorded our results again. When the water was hottest it ranged from 47 to 40 degrees and it took from 47 seconds to 28 seconds for the sugar cubes to dissolve. The lukewarm water ranged from 38 to 23 degrees and it took from 1 minute 9 seconds to 28 seconds for the sugar cubes to dissolve. The cold water ranged from 18 to 17 degrees and it took from 1 minute 10 second to 40 seconds for the sugar cubes to dissolve. We concluded that the colder the water is, the longer it will take for a sugar cube to dissolve in it.
On the 11 of January 2014 we went to the RDS Primary Science Fair.It was an honour to be invited to exhibit our science project at this prestigious venue. Only three percent of the primary school in Ireland were selected to exhibit their projects at the RDS . At the end of the day the adjudicators gave us a plaque and a certificate. The adjudicators wrote on the certificate that we were a well mannered and knowledgeable class and that our presentation and layout were both excellent. They were also impressed by our virtual RDS that we created on mission V. It was a great achievement for sixth class and everyone really enjoyed their day at the RDS Primary Science Fair.
Today, Wednesday 15th May, a lady called Natasha came into 1st Class and talked to us all about reducing our waste, reusing different things and recycling as much as we can.
She told us lots of interesting facts about where paper and plastic come from and how they are made. We were amazed to see all of the different bags, clothes and jewellery that had been made out of recycled materials like tents, tyres and sweet wrappers!
We talked a lot about reducing the amount of electricity that we use at home.
Last week in room 11 we had great fun using the technique of tie dying to create wonderful designs on some cotton material.
We made up the dye solution using water, salt, and fabric die. When we had tied up our t-shirts and pieces of cotton with elastic bands, we soaked them in the dye for a couple of hours, stirring occasionally. After leaving them to soak, you must wash them in the washing machine and leave to dry.
Today we got to open them up to reveal all the unique designs and patterns that we created. We are thrilled with the results and are looking forward to wearing our new t-shirts and tops!