We constructed a Geodesic Dome in class. First, we made 3D structures using toothpicks and Plasticine to see which structure would be the strongest to use. We found that triangular structures worked best. We made lots of triangles using rolled newspaper and taped them together. We had to make sure that each one was the same length. We attached an oxygen supply to our Dome. We found out lots of fun facts about life on the moon!
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.
Take a look at the wonderful costumes from our annual ‘Book Character Parade’. Well done 2nd Class!
Check out our Eco-friendly bags now on display in ‘Les Fleurs’ flower shop in Harold’s Cross. They are so easy to make, check out our video in the post below!
Check out this video we made to show you how to make Eco-friendly bags, why not get creative and make a bag to go along with your Easter Bonnet this year!
Take a look at our Eco friendly bags. We researched gift bags and discovered that the majority of them are made in China. We wanted to reduce the air/land and sea miles used and thereby reduce our carbon footprint by making bags of our own using old newspapers.
Task: Design a bridge
Using blocks, paper, books and crayons to test we designed bridges to see which ones were stronger and could hold the most amount of crayons. We manipulated our structures to increase their strength by folding the paper used, using double layers of paper, creating arches and structures for extra support.
The material from which a structure is made is important but you can strengthen a material by changing is shape. Bridge designers often use different shapes for example: arches and triangles. The curve of the arch spreads the load on the bridge and makes it stronger.
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.
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