A simple rocket made from a coke bottle, 1/4 filled with water and powered by a bicycle pump. (Can buy the kit from Hawkins Bazaar for about £12.99 here)
Great for talking about Forces. Make sure you do it somewhere where there’s a lot of space
Update – from www.Rokit.com
Science Education: Using ROKIT to “Bring Science Alive”
- A precision water rocket that self launches at a pre-determined pressure (2BAR).
- Providing the capability of repeatable experiments.
- Schools, colleges and Science Advisors throughout the world are using this exciting kit to demonstrate Laws of Motion.
- Rokit is a valuable visual tool for all levels of Science Education.
ROKIT for Primary Education demonstrates the principles of rocket propulsion, trajectory, streamlining and basic aerodynamics. It is also used in fun education projects such as ROKIT Golf, Space Travel etc.
ROKIT for Secondary Education is a precision water rocket that enables accurate and repeatable experiments to be performed. It can be used to measure and study velocity and acceleration, force, trajectory, thrust and drag.
A squid propels itself by filling its body with water and ejecting it backwards in order to move forwards. This is the principle used by rocket engineers. Space rockets use fuels that are burned in a chamber shaped rather like a bottle, with the neck pointing backwards. The burning fuel produces a large quantity of gas that is further expanded by the heat generated and this is ejected through the neck (or nozzle) of the “bottle” (normally called the combustion chamber) at a very high velocity, propelling the rocket in the opposite direction.
The ROKIT, like the squid, uses water as the driving agent and compressed air instead of heat to provide the energy.
For the technically minded the pressure in the bottle at launch (just before the brass bung releases) is about 18 x 104 N/m2 (or about 25 psi). The water is forced through a nozzle with a cross sectional area of about 1cm2 and this produces a theoretical thrust of about 18 Newtons (about 3.9lbs) at launch. As the water is ejected the ROKIT gets lighter resulting in an increased acceleration or ‘g’ force. This increasing ‘g’ force is one of the more unpleasant aspects of space flight that astronauts have to endure; a rocket leaving the earth’s atmosphere would have to keep up this increasing acceleration for some time. The ROKIT expels its charge of water in about 1 second so DON’T WORRY, IT’S NOT LIKELY TO GO INTO ORBIT!
Posted by Danny Nicholson | Posted in Ed research, General Science | Posted on 26-06-2009
Tags: ks2, KS3, transition
A few handy links by way of follow up to todays talk about KS3 and KS2/3 Transition
Science Transition Passport – a set of activities from ASE Science Year for a KS2/3 Transition Project
AstraZeneca STAY project – KS2/3 Transition project
The London Challenge – report on a Transition project
Impact of the new KS3 Curriculum – Ofsted Report
KS3 National Curriculum – revised
Posted by Danny Nicholson | Posted in ICT | Posted on 26-06-2009
Tags: ICT, iwb, Smartboard
I’ve put a batch of my Smart Notebook files up on my Think Bank website for anyone who wants them to download.
Best thing to do is to right click and “save target as” since Smart sometimes gets confused.
Properties of Materials anagram activity (includes countdown themetune)
If you want the Blockbusters game, you can download that here.
Tags: images, photo, presentation, source
One of the benefits of having an Interactive Whiteboard in the classroom (or even just a data projector) is the opportunity to display full colour high quality images instead of grainy acetates or posters. With a powerful image you can really add some “punch” to your lesson. Put images up while students are coming into the room – use them as part of a lesson starter – stimulate questions.
What is going on here? Why is the astronaut wearing that suit? Why is it white? What would happen if he/she wasn’t on that robotic arm? What do you think it would be like to be up there? What do you think he is thinking? Should we be sending people into space? What is keeping him up there? What do we mean by Orbit? etc etc.
The Big Picture
One of my favourite sites for these kind of inspirational images is The Big Picture from the Boston Times. Every few days they post another set of images which never fail to make me go “wow”.
Here is just a selection of the great images that you could use in different curriculum areas:
For Literacy – any and all of them could have a role in stimulating story writing, or class discussion on different topics.
And there are many more, plus its growing every week.
In a similar vein, The BBC website also has an “In Pictures” section which covers events in the news. As does The Times, The Telegraph and The Guardian. All worth bookmarking and checking from time to time.
Remember to attribute the source of these images when you use them in your lessons. These are still the copyright of the photographer so you need to be careful how you use and distribute these images.
For those of you who are into photography – Flickr is the YouTube of photographs. Several thousand photos get uploaded to Flickr every minute. The quality can be patchy, but there are thousands of excellent photographers sharing their works on Flickr. (and a few dodgy photographers, like me!)
What makes Flickr useful is the ability to add a Creative Commons licence to your images which says how they can be used. Many people allow their photos to be used anywhere, as long as you attribute them as the source of the image. Many will also let their images be used commercially in this way as well. In my presentations I now use a lot of images from Flickr and always link the image back to its original Flickr page by way of acknowledging the photographer.
To help find creative commons images, there are several tools now which will let you search Flickr for CC images. My Favourite is FlickrCC – enter a tag to search for and it will return 36 thumbnails. Click on a thumbnail to see more information and to visit the original page on Flickr.
If you want to know more about Creative Commons, I have written a short guide which you can read on Scribd.
Another useful gallery is the E2BN Educational Gallery of images. It’s not anywhere near as comprehensive as Flickr, but some schools may block access to Flickr since there are adult images on there.
Google Image Search
It would be wrong to talk about image searching without mentioning the Google Image search, which I use quite a lot. The drawback of the images it produces is that on the whole they are usually copyrighted images, or that the copyright of the image is unclear. This makes them tricky to use in educational resources that you want to redistribute.
A new addition to the Google Search is the ability to select the colour you are looking for. So instead of just looking for Flowers, you can look for only red flowers… It’s a neat addition.
In summary, there is a wealth of image sources on the Internet that you can use to provide punch to your lessons.
Remember to not to choose images that are too small, or that look blocky when stretched to full screen. Test them out before the lesson to make sure they look OK. Show them as big as you can for maximum impact. Think about how you want to use them – what questions could you ask to stimulate your students thinking processes?
For example, as a leaving thought – How could you use this image? What does this say to you?