Sunday, June 12, 2016

Roller Coasters


Roller coasters are complex machines made up of multiple simple machines. Each simple machine that makes up part of a roller coaster changes the force and controls the motion of the cars during the ride. 


A lever pulls the roller coaster up the hills, and inclined planes are used to build up speed during the ride. Pulleys are used on the first hill, which is very steep, to lift the cars up to the top. 


Screws play a very important role in making sure the roller coaster is safe. They hold the cars, track, safety bars and seats in place. A wheel and axle mechanism is built underneath the cars and is what allows the roller coaster to move along the track. 


Your challenge
To design a roller coaster using your knowledge of forces and simple machines. 


Step 1
Draw your design in your literacy book.  Clearly label it with the names of the simple machines you need and record all the materials you will need to make your roller coaster.

Step 2
Use recycled materials to build it.  Make sure you take photos as you go to show all of your developments.


Materials you will might need;
• Cardboard
• Marbles or balls 

• Straws
• String
• Paper plates 
• Pencils
• Tape / glue
• Paper clips

• Toilet rolls
• Egg cartons
• Paddle pop sticks 

• Pipe cleaners
• Balsa wood
• BBQ skewers
• PVC pipe
• Cotton reels
• Fishing sinkers 

• Plastic cups
• Lego
• Bottle caps

How safe is your roller coaster?  How can you test it?

Wednesday, June 1, 2016

Room 20's Post on Wednesday, 1 June 2016


Easy Blog Photo
Rubbish There are people that leave their rubbish in certain places and the rubbish is left to blow everywhere there's rubbish stuck in trees,in bushes and on roofs.This has to stop! The rubbish isn't just making the place messier but it is killing life! The rubbish is blowing into the water and sea life is eating it!But it isn't just that but until then it's too late! The sea life is starving to death!Sea life can't re-generate you know!So they die and sometimes wash up on shore where people are finding them... ...and the rubbish in their stomach.This has to stop NOW!We must save the sea life!

Tuesday, May 24, 2016

Room 20's Post on Tuesday, 24 May 2016


Easy Blog Photo
Nouns and verbs I found a book last night . I started to read it and I found nouns and verbs in it. At school we are learning about:putting nouns first and then putting the verb next ,so I am going to put this page on the blog so you can get the hang of what we are learning about with our writing. My name is Lydia.
Can you find some activated nouns like Lydia?  Take a photo and post it into this link to share with us!
Padlet