This week was Engineering week. We learned about different types of Engineers. There are lots of different types. We had an engineering circuit to learn about different types of engineering. WE made cars and vehicles and used gears like mechanical engineers, we made bridges like civil engineers and put together limbs and figures like Biomedical engineers. IN science we built circuits and used switches and motors like electronic engineers. Click below to see some pictures.
To test the speed of your reaction get a friend to hold the top of the reaction strip; place your thumb and first finger so that they are level with the 0.00 line. Your friend drops the strip and you try to catch it as quickly as possible between your thumb and first finger. Read your reaction speed in seconds from the scale on the strip.
We glued the paper onto pringles tubes and painted them to look like lighthouse.
We made electric circuits using a battery, wires, bulb and bulb-holder. We arranged the circuit so that the bulb was at the top of the
tube and the battery at the bottom. We put plastic glasses over the bulb.
Today we welcomed an Australian guest speaker called Dale, into our classroom to speak to us about bees, birds, bats, beetles and bugs. We even got to look at some beetles from inside a special container. Some of us were brave enough to hold an Australian stick insect.
We explored the relationship between various creatures who live in our environment and learned that there is a purpose for every creature in the food chain.
This “biodiversity” is essential in keeping the environment healthy and fit for human life.
We had a visitor called Dale this morning and he told us all about bugs, beetles, butterflies, bats, bees and birds. He had pictures of animals from different countries, like snakes, wallabies, wombats and echidnas (which are like hedgehogs and have babies called puggles.)
He read us a story about Robby Robin. We got to hold a stick insect on our hands. He passed around bug viewers where we got to see a tarantula, a beetle, a cockroach, a spider and a larva.
He played a song called “Bats, Bats, Bats.” Dale is from Australia and when he was in high school his teachers had to go around their football pitches to remove poisonous snakes before they could play the match! He had a special animal caller that looked like a bird’s feather on a long string and when he swung it around really fast, it made a sound like a motorbike.
He also had a bat caller, and he showed a recording of bats flying in his garden so we could hear what they sound like.
We made paper helicopters and watched them spin as they
The shape of the helicopter rotor blades make it spin when dropped from a height. Gravity pulls the helicopter down. The air resists the movement and pushes up each rotor separately, causing the helicopter to spin.
On Monday we put an egg into a jar of vinegar. Today, when we took it out, the shell had been eroded away! Vinegar is an acid and the egg shell is made of calcium. The egg’s membrane remained and this made the egg feel rubbery! We were able to bounce the egg on the table!
We explored the power of our senses during this experiment in Science. We held a piece of cotton wool, covered in vanilla essence up to our nose, while eating a piece of apple. The result was that the strong smell of vanilla essence over powered our sense of taste and the apple tasted of vanilla!!
We also identified the different parts of the tongue and got to taste things that were sweet, salty, sour and bitter. We tasted Tuc crackers (salty), fizzy sweets (sour) and lemon and lime (bitter).
In order to balance when you are standing your centre of gravity should be over your feet. When you are standing and bend forwards your centre of gravity starts to move forward too. Normally, you’d compensate by sticking your bum out behind you.
In this experiment you stand with your back and heels against a wall/door. Drop a coin on the floor in front of you and try to pick it up without falling over.
With the wall/door there, this is impossible, so you tip over.