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Volume: Counting Stars

This video, from Twig World, begins by asking how do astronomers estimate the number of stars in the night sky. To explain how it is done, a method of calculating the number of grains of sand on a beach is shown. The same principles are used to estimate the number of stars in the sky.

The video is...

Black Holes

This film, from Twig World, looks at how dying stars transform into black holes and are areas of mass so great that even light can't escape.

The key points made in the film are:

•When a star dies, it collapses and condenses into a single point, known as a singularity.

•The gravitational pull...

Hubble Space Telescope

This film, from Twig World, shows how scientists working on the Hubble Telescope, orbiting 400 miles above the Earth, fixed a fault by giving the telescope a pair of spectacles. The key points made in the film are: •The Hubble Telescope took eight years to build, from over 400,000 parts. •Initially, a fault in...

Milky Way's Black Hole

This film, from Twig World, looks at how scientists study black holes. Scientists believe there is a supermassive black hole 26,000 light years away at the centre of our Galaxy. But how do they know, when they can't see it?

The key points made in the film are:

•Black holes are formed when massive...

Scale of the Universe

This film, from Twig World, looks at how big the universe is.

The key points made in the film are:

•The Universe is constantly expanding.

•The Universe is already billions of light years across.

•Our Solar System is part of the Milky Way galaxy.

•Beyond our galaxy lie many more...

Telescopes

This film, from Twig World, looks at who invented telescopes and how they have developed throughout history.

The key points made in the film are:

•The first optical telescopes were made around 1608. •Early telescopes consisted of a convex lens and an eyepiece.

•Later telescope designs used...

The Search for Dark Matter

This film, from Twig World, looks at the work of scientists, deep underground in a disused mine in Yorkshire, searching for particles that can't be seen and have never been detected, but might bind our Universe together.

The key points made in the film are:

•Dark matter is believed to make up about...

What is a Light Year?

This film, from Twig World, looks at what a light year is, how it is measured and why we measure distance in terms of time?

The key points made in the film are:

•Light travels through space at 300 million metres per second

•A light year is the distance that light travels in one year

•...

Session One: What Do We Already Know? Blockly Recap

This activity follows-on from previous exercises using the Blockly editor on the Rapid Router website. It reviews what the children have learned before they proceed to using text-based programming.

The exercise looks at the most advanced ideas used with the Blockly-based phase of the Rapid Router scheme,...

Session Two: Breaking Down the Problem into Chunks

This activity explores the concepts of pattern recognition and problem decomposition. It illustrates these ideas using a popular children's book, "We're going on a bear hunt" by Michael Rosen.

Children are asked to apply their understanding by then creating functions using the Blockly editor on the Rapid...

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