Outstanding Science | Primary Science Resources for the National Curriculum

Primary Science Resources for the National Curriculum

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KS2 - Year 3 Light

Learning objective

I can investigate how moving a light source changes the size of an object's shadow.

Children investigate how moving a light source affects the size of an object's shadow. They predict and then measure the width of the shadow cast when the light source is at a range of distances. They transfer their results from their table to a bar chart. Finally, they attempt to explain the relationship between light source distance and shadow size.

  • 3d5: find patterns in the way that the size of shadows change.
Moving an object towards a light source and away from a surface makes its shadow increase in size.
Moving an object away from a light source and towards a surface makes its shadow decrease in size.
Year 3 Light | Outstanding Science

Light sources Worksheet

Outstanding Science Year 3 | Light | OS3D001

Learning objective

I can identify light sources.

Children learn that we see things because they are either light sources that make light, and that we see them because light travels directly into our eyes, or they are non-light sources that we can see because light reflects off them into our eyes. They cut out 12 different images and place them into 2 groups - light sources and non-light sources.

  • 3d1: recognise that they need light in order to see things and that dark is the absence of light
A light source is an object that produces light.
We see light sources because light travels from them into our eyes.
We see can see non-light sources because light from a light source reflects off them and travels into our eyes.
Year 3 Light | Outstanding Science

Light sources in our school Investigation

Outstanding Science Year 3 | Light | OS3D002

Learning objective

I can identify light sources in our school.

Children investigate the number of light sources in the different rooms in their school, starting with their classroom. They record their findings on a tally chart which they then turn into a frequency table. Finally, children display their results on a horizontal bar chart, selecting a suitable scale for their graph. They discuss what a light source is, how most light sources are powered and why different rooms have different numbers of light sources.

  • 3d2: notice that light is reflected from surfaces
A light source is an object that produces its own light.
We need light sources in order to see things.
Year 3 Light | Outstanding Science

Light sources and reflectors Worksheet

Outstanding Science Year 3 | Light | OS3D003

Learning objective

I can identify whether an object is a light source or a reflector.

Children learn that some objects are visible because they are light sources and some are visible because they reflect light. Children look at 9 different images of objects that help us to see at night. They identify whether they are light sources or reflectors, and place them on a single-set Venn diagram to record their classification.

  • 3d2: notice that light is reflected from surfaces
Some objects are light sources and make their own light.
Some objects are reflectors and reflect the light made by other objects.
Year 3 Light | Outstanding Science

Sun safety Worksheet

Outstanding Science Year 3 | Light | OS3D004

Learning objective

I can explain how the Sun can be dangerous and ways we can protect ourselves.

Children learn about the importance of the Sun as the ultimate energy source for all life on Earth. They also learn about different ways in which exposure to the Sun can be dangerous to humans. Children explain, and illustrate, ways in which the Sun can damage our eyes and skin and ways that this damage can be minimised.

  • 3d3: recognise that light from the sun can be dangerous and that there are ways to protect their eyes
The Sun is a star.
The Sun keeps the water on Earth warm enough to form liquid oceans.
The Sun is vital for life on Earth because it is the ultimate source of all food energy.
The Sun can damage our eyes.
Sunglasses can protect our eyes from damage by the Sun.
The Sun can damage our skin, causing aliments such as sunburn or even skin cancer.
We can protect our skin from the Sun by covering it with sunblock/sunscreen, clothing, or shade.
Year 3 Light | Outstanding Science

Forming shadows Investigation

Outstanding Science Year 3 | Light | OS3D005

Learning objective

I can explain how shadows are formed.

Children learn that shadows are formed when an opaque object blocks the path of light, which travels in straight lines. They use a light source to cast an object's shadow onto a piece of paper and draw around the outline. They investigate and explain into how the shape of an object affects its shadow.

  • 3d4: recognise that shadows are formed when the light from a light source is blocked by a solid object
Shadows are formed when light from a light source is blocked by an object.
The shape of an object's shadow is affected by the object's shape.
Year 3 Light | Outstanding Science

Transparent, Translucent, Opaque Investigation

Outstanding Science Year 3 | Light | OS3D006

Learning objective

I can group objects according to whether they are transparent, translucent, or opaque.

Children learn that we can classify objects as transparent, translucent or opaque depending on how light behaves when it hits them. They carry out an investigation to classify a selection of classroom objects as transparent, translucent, or opaque. They display their findings in a Venn diagram with 2 sets, one nested inside the other.

  • 3d4: recognise that shadows are formed when the light from a light source is blocked by a solid object
Opaque objects do not allow any light to pass through them.
Translucent objects allow some light to pass through them.
Transparent objects allow much light to pass through them.
Year 3 Light | Outstanding Science

Making a sundial Investigation

Outstanding Science Year 3 | Light | OS3D008

Learning objective

I can make a sundial and explain how it works.

Children learn that shadows cast by the Sun change in length and direction during the day because of the apparent motion of the Sun across the sky (though this is really caused by the roration of the Earth). Using a gnomon (such as a cricket wicket) and chalk, children create their own sundial on the yard. They calibrate their sundial and explain how it works.

  • 3d5: find patterns in the way that the size of shadows change.
Shadows cast by the Sun change in size and direction as the Sun appears to move across the sky.
A sundial is a device that uses the shadows cast by the Sun's apparent motion across the sky to tell the time.
Year 3 Light | Outstanding Science