lee's classroom

(another MPPS global2.vic.edu.au weblog)

May 23, 2019
by leesclassroom
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Year 3/4 Term 2 Science Unit

Dear Parents/Carers,

This term as a part of our Chemical Science unit the Year 3/ 4 students will be investigating the physical properties of various materials, and how these properties can influence their use. At the end of unit students will use this understanding to complete a design brief which will require them to design a suitable package to transport a selected item through the post. The product package will need to satisfy a range of criteria that will be established during the unit.

To assist with this classwork we are seeking your assistance in a couple of areas.

  1. We ask that parents/ carers, when the opportunity arises please acknowledge and discuss the various forms of package that you and your child come across on a day to day basis.

This could be anything from the pasta you cook for dinner to your latest online shopping delivery.

Areas of discussion could include:

  • What is the material?
  • How suitable is its design and construction?
  • What could you replace it with?
  • Where does it end up after it’s served its purpose, any environmental impacts?

It is really helpful for your child if these are open questions leading them to think through their responses, and allows them to generate any subsequent questions. The aim if increase their awareness and skills of observation while building on what is being explored in the classroom.

  1. The second area you can help is allowing your child to collect a range simple materials they can use when they come to design their own packaging during the second half of the term. Again we ask this is driven by the students, allowing them to develop their sense of questioning and investigation. While we won’t be looking at large amounts we want students to think about suitability and quality and collect a variety to allow for experimentation. We will also be explaining to students that this is a collaborative unit and they should be prepared to share any materials they bring that they may not end up using themselves.

 

Thank you for support with this classroom activity and we look forward to seeing what the students come up with.

May 29, 2018
by leesclassroom
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Save The Egg Challenge

Today we begin working on our science project. Our challenge is – Can you design a bike or football helmet to withstand impact and reduce the likelihood of a brain injury? 

 

Students will be using their knowledge of forces acting on an object in a crash or fall, and apply a design process to develop a safe container for an egg that is dropped from a set height.

The design must:

  • Stay on the head.
  • Keep the skull from cracking.
  • Allow for the user to see through an opening at the front.
  • The helmet will be made from recycled materials.

Students will:

  • work in teams
  • solve design problems
  • make modifications, change ideas and maybe make
  • mistakes
  • use peer feedback to improve their designs using a design process like engineers and designers experiment, test, refine and try again

Throughout this process students will develop a folio of work that demonstrates their learning.

 

The two videos we looked at to help us understand why this is such an important issue were:

http://www.abc.net.au/btn/story/s2986284.htm

http://www.abc.net.au/btn/story/s4716349.htm

(Two points to note:

  • Even if helmets are worn, they don’t completely eliminate the risk. They could give the player a false sense of security and they could put their body on the line even more.
  • This is why it is important to follow MPPS’ no tackling rule)

May 14, 2018
by leesclassroom
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Forces: Gravity

The force that pulls things to the ground on Earth (and other planets) is called gravity.

Gravity also holds Earth and the other planets in their orbits around the Sun.

Gravity is a very useful force – It keeps us on the Earth, and keeps the Earth and the other planets revolving around the Sun. It holds everything together, which is why it has been called  ‘The Universal Glue’.

Although the force of gravity also exists on the Moon  it is not as strong as it is here on Earth. This is because the Moon is much smaller than the Earth it is not as heavy as the Earth, and so gravity is much weaker there.

In the past people thought that heavier things fell faster than light things. Galileo, an Italian scientist from the 1600’s, conducted some experiments and found that things with different weight fell at approximately the same speed.

 

 

 

 

 

 

 

 

 

 

Below are the videos we looked at in class:

Defining Gravity: Crash Course Kids #4.1 

Down to Earth: Crash Course Kids #4.2 

The Spinning Ball experiment

 

Another resource is:

http://www.bbc.co.uk/schools/gcsebitesize/science/edexcel_pre_2011/space/gravityforceandweightrev3.shtml (just this page) 

 

Some extension links:

Danger! Falling Objects: Crash Course Kids #32.1

Over (to) The Moon: Crash Course Kids #13.2

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