Are Rewards the Right Approach? Written By You
14-year-old Gabriella told us that her school gives lots of rewards for doing well, or for good behaviour. It got her thinking about reward systems, and if they are a good idea.
I’m sure everyone has been offered a reward for doing the right thing at some point in their lives, whether it has been your parents rewarding you for your actions or teachers at school.
When you are presented with the idea of a reward it makes you want to succeed right? Or does it? I know from personal experience that people aren’t necessarily excited by the prospect of being given a reward and when they are, they are usually set on the reward and not the idea behind it. For example, prizes for winning competitions often attract entries and participants often enter because of the prize and not because they are really interested in the theme of the competition. The same kind if thing comes out of rewards at school.
Who Invented the First Electric Battery?
When we talk about electric batteries, we often talk about voltage. But did you know that this word is named after the person who invented the first electric battery? First, let’s take a look at what a volt is, and then we’ll find out more about the guy who gave the ‘volt’ its name.
What is a Volt?
A volt is defined as a unit of electric potential and electromotive force, and voltage refers to the number of those units. That sounds a lot more complicated than it is! If you think of the water in a tap being like the electricity running through a wire, the voltage means the amount of pressure. This video is quite long but explains it very well.
Why are Volts Called Volts?
Alessandro Volta
The term actually comes from a name. It was coined in honour of Italian physicist Alessandro Volta, who is recognised as the inventor of the first electric battery. During the 1790s, Volta worked on the theories of electricity of the day.
Volta disagreed with the theory proposed by fellow Italian scientist Galvani that electricity was generated by animal tissue. Instead of experimenting on frogs or other animals, Volta did experiment after experiment with metals.
His persistence paid off, and in 1800, he invented the world’s first battery, known as the ‘voltaic pile’.
The Voltaic Pile
This voltaic pile was simple but ingenious. It consisted of a pile of zinc and silver discs. But alternating between them was a piece of cardboard, or a piece of cloth, that had been soaked in saltwater.
There was a wire that connected the zinc disc on the bottom to the silver disc on the top, and this wire was capable of producing sparks.
What else Did Volta Invent?
The invention of the first electric battery brought Volta the most fame and recognition, but he also made other discoveries. He invented the electrophorus, a device that could transfer an electrical charge to other objects, as well as an electrical condensor, and the voltaic cell.
He is also known for having discovered and isolated methane gas. After his death, the volt and voltage were named in his memory.
What about Galvani?
Luigi Galvani
Yet there is one more twist to the tale. Volta’s longstanding colleague Galvani of the animal electricity theory also left his name in our language. When we say ‘galvanise’ or ‘galvanism’, that is where it comes from.
Despite their differing theories, there was no rivalry between the two scientists. They were both more concerned with the pursuit of knowledge than with whose theory would prove to be right, and it was Volta who first coined the word ‘galvanismo’ in Italian.
Featured Image by Thomas Kelley on Unsplash
The Best Urban Beaches
Who else is looking forward to the summer? Whether you call your summer break a ‘vacation’ or a ‘holiday’, there is a good chance that some of you are heading for the beach.
Did you know that around the world there are hundreds of artificial beaches. Some are near the coast, but others are miles away from the seaside – perfect for those who don’t or can’t travel far.
City beaches are sometimes called ‘urban beaches’ like the one above in Cologne, Germany. This can involve the delivery of hundreds of tonnes of sand, to a place where there is no sand.
Islands Brygge, Copenhagen, Denmark
There is no sand here, but it is an oasis of fun in the middle of the city. For many years, this area was run down and neglected, but after a regeneration project, new life is blossoming. Who wants to jump off this diving board?
Festival of Love Beach, South Bank, London UK
This beach is all about relaxing and digging your feet into the sand. No pool (and the chilly Thames is certainly no alternative!) but great views over London, and the South Bank centre often has great activities for kids on offer. Check out their website for details.
Paris Plage, France
The capital city of France can get really hot and muggy in the summer months, so what better way than to cool off at an urban beach? Check out the huge showers in the picture!
Bundek Lake, Zagreb, Croatia
In the south of the city of Zagreb, this park was brought back to life after many years of neglect. It is a popular spot for locals and tourists alike, hoping to cool off in the hot Croatian summers.
Baby Plage, Geneva, Switzerland
Baby Plage, Geneva
This might be the MOST fun urban beach for kids in the world. The huge trees are festooned with old tyres and bicycle tubes, knotted together to create ladders and swings.
San Alfonso del Mar, Chile
Ok, this is a bit of a cheat, cause it isn’t an urban beach, but it is the biggest swimming pool in the world, so we had to include it! It is 8 hectares, and holds 250 million liters of water. That is equivalent of 6,000 familiar 8m long pools! It is part of a privately owned complex in South America.
BONUS BEACHES
Now, don’t tell your parents that we showed you this, and don’t try it out at home, but how awesome does this look? We can’t help thinking that this would be VERY messy, but it looks so relaxing and fun!
The artist Justin Kemp created home sandbox for under his desk.
This was built in Japan in 1993 – an artificial beach with a retractable roof. It was not commercially successful and closed over 10 years ago. Which is a real shame, because it looks really amazing.
Featured Image – Cologne KM689 Beach Bar in Germany
Green and Growing: The Life of a Seed
As you know, there is a vast number of different kinds of plants growing all over the world, from snowy slopes to Amazon rain forests to dusty deserts: plant life is everywhere. So how does it all work? Lets start with seeds.
The Life of a Seed
Picture a seed – I am sure you have all seen them. It will have a hard outer shell to protect it. When it has found the right conditions of warmth and moisture, this shell will crack or split as a root pushes its way out to take hold in the soil. Then the plant will start to grow and a shoot will make its way upwards, with the root growing down, to draw moisture from the ground and provide some balance for the plant, keeping it firm in its place.
Just like you and me, plants need food to grow. Their food is very different from ours, of course! Here’s what they do: the leaves draw water up from the roots, through the stem, and they also soak up sunlight and air. These three things combine to make food in the leaves, where it is stored. Now think of an onion. It is formed to store the food for the plant.