Term 3 Materials
Primary Connections Material World Year 4 Chemistry
Engage
- Why are certain materials used for clothing e.g. wool in winter, cotton in summer?
- What’s wrong with synthetic clothes in summer?
- What materials are used to make different gloves? E.g. gardening gloves, ski gloves, dishwashing gloves.
- How is lycra different to denim when used for swimming? What about rashes?
Watch BBC Learning Clip
http://www.bbc.co.uk/learningzone/clips/materials-and-their-uses/2160.html
Primary Connections 1.
Use web 2 tool 'posties' for students to list a material, it's use and why it is used. Eg. The material is plastic, the object is a water bottle, This material is used because it is light and water resistant.
- Ask the children to make four different designs for a cup, each made from a different material. Two of the designs must work and two of them must not work.
- Ask the children to explain why each of the cups will be a success or a failure.
- Lesson 2 Primary Connections - game - http://www.bbc.co.uk/bitesize/ks2/science/materials/material_properties/play/
- Do online quiz
- Lesson 3: Primary Connections - What a rotter - Fair Test
Record ideas about fair testing in science journal
Explore
Investigating a particular property across a range of materials.
Properties of materials
Objects that we use everyday are usually made of particular materials because of the properties those materials have. This is what makes the object useful. Imagine if you had a rubber saucepan or a metal football! Can you think why that would not be a good idea?
Draw a line to match the object to the properties of its materials:
(a) Metal Saucepan with a wooden handle
(b) Car dashboard (plastic)
(c) Carved wooden table
(d) Bathroom sponge
(e) Glass window
----------------------------------------------
transparent
porous, light, holds water
can be moulded to fit a specific shape, light, durable
decorative, hard wearing, solid
Conducts heat well yet insulation from heat where needed
Conductor and Insulators
One specific property of materials is that they will either conduct electricity or will not.
Solids, Liquids and Gases
Everything around us is made of matter. Matter can be divided up into solids, liquids and gases. Your teacher will show you some examples of solids, liquids and gases.
All matter is made up of particles. Particles in solids, liquids and gases behave very differently from each other. Your teacher will demonstrate these differences to you.
- What is the range of things that we use materials for?
- How does purpose affect the sorts of materials we use?
- What is it about the materials that will allow them to be more or less suitable for a particular function?
- Consider properties such as insulation; sun resistance; fade resistance; strength; durability; lightness; absorption.
Properties of materials
Objects that we use everyday are usually made of particular materials because of the properties those materials have. This is what makes the object useful. Imagine if you had a rubber saucepan or a metal football! Can you think why that would not be a good idea?
Draw a line to match the object to the properties of its materials:
(a) Metal Saucepan with a wooden handle
(b) Car dashboard (plastic)
(c) Carved wooden table
(d) Bathroom sponge
(e) Glass window
----------------------------------------------
transparent
porous, light, holds water
can be moulded to fit a specific shape, light, durable
decorative, hard wearing, solid
Conducts heat well yet insulation from heat where needed
Conductor and Insulators
One specific property of materials is that they will either conduct electricity or will not.
- A substance which allows electricity to pass through it is called a conductor.
- A substance which does not allow electricity to pass through it is called an insulator
Solids, Liquids and Gases
Everything around us is made of matter. Matter can be divided up into solids, liquids and gases. Your teacher will show you some examples of solids, liquids and gases.
All matter is made up of particles. Particles in solids, liquids and gases behave very differently from each other. Your teacher will demonstrate these differences to you.
Explain
Selecting materials for uses based on their properties.
- Which are best for storing lunches, lunch box or plastic bag?
- What materials are best to make skateboards from?
- What makes cardboard useful?
- Why are bike helmets made from fibreglass and not steel?
- Which food storage containers work best for different foods?
- Is a metal bat better than a wooden bat?
- What is the best soccer ball? Why do some cost a lot more than others e.g. leather vs. plastic?
- Sporting equipment such as super balls, squash or tennis balls, table tennis balls, marbles: What makes them good at the job you want them to do?
elaborate
Considering how the properties of materials affect the management of waste or can lead to pollution.
Alien Soup experiment
- Do different materials break down differently? How does this affect their use?
- What is wrong with plastic bags? How do their properties affect how we use them?
Alien Soup experiment
evaluate
Student creates web quest see http://questgarden.com/109/61/4/101006034614/index.htmKent ICT | Kent Trust Web provided by Kent County Council