Do Pulley Systems Make Things Lighter?

This year in 6th class for the RDS Science Blast we decided to investigate pulley systems. First we made a single fixed pulley system but discovered that it made no difference to the weight. Then we made a multiple fixed pulley system. We calculated that there was a mechanical advantage of 1.8 with this method. Next we made a multiple pulley system using a movable pulley and a fixed pulley. This had the biggest mechanical advantage 3. Finally we wanted make a structure used in everyday life so we decided on a crane. We made the crane out of modelling wood and used 3 fixed pulleys and 1 moveable pulley. We also made a handle out of an old pencil which attaches to the pulleys and makes the crane work when you wind it. We really enjoyed doing this project.

 

 

 

Hydraulic Bridge

This year our class entered the Intel Mini Scientist Competition and our group was lucky enough to be selected to go to the Regional Finals. Our group’s topic was hydraulics, more specifically hydraulic bridges. We chose this topic because last year two people from our
group went to the previous regional final and three other groups did hydraulic arms and we had an interest in the science behind hydraulics. We decided to investigate hydraulic bridges.

At first we found it very difficult to construct the bridge and came across quite a few problems but after a while we figured it out. In November three judges from Intel came in and judged all the classes’ projects. Our group was lucky enough to be selected to go to the Regional Final! In preparation for the Regional Final we decided to make another bridge out of balsa wood. In December our group went to Blanchardstown IT and after a long day of presenting we made it to the National Finals in Maynooth. We were delighted when we found out we were in the top 1% in Ireland. Then the awards were announced but unfortunately we didn’t we win anything but were still extremely proud of ourselves.

5th Class Room 7 – The Human Eye

5th Class Room 7 have been extremely busy researching information about the human eye. We learned all about the human eye, it’s parts and their functions. After that, we split into groups and researched topics relating to the human eye that are of interest to us; Optical Illusions and Braille. We also completed 3 surveys on the topics of eye colour, glasses and contact lenses and what you could see in one particular optical illusion.

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IZAK 9 – Fourth Class

Fourth class have been using IZAK 9 this year to help improve their maths and problem solving skills. IZAK 9 is a large cube that is made up of 27 smaller individual cubes that can be arranged and rearranged in different ways in order to solve a variety of problems. It is great fun and helps us to learn. Here are some photos of our class with their IZAK 9 kits.-

Bee-Bots ~ASD Class

Siluan, Lorchán and Thomas spent Friday afternoon playing with Bee-Bots. They each had a Bee-Bot and a different activity mat. Siluan used the busy street map, Lorchán used the 2D shapes mat and Thomas used the letters mat. They are learning how to programme a Bee-Bot to move from one location to another using the directional arrows. They had lots of fun and are looking forward to using them again.