Pupils should be taught to:
• recognise that they need light in order to see things and that dark is the absence of light;
• notice that light reflects from surfaces;
• recognise that light from the sun can be dangerous and that there are ways to protect their eyes;
• recognise that shadows are formed when light from a light source is blocked by an opaque object;
• find patterns in the way that the size of shadows change.
A PowerPoint presentation used to introduce the scientific understanding and theories surrounding light and shadows. The PowerPoint can be used at the beginning of the topic or during it to stimulate scientific discussions, ideas and theories.View Resource
Pupils learn that in the past sundials were used to help people tell the time of day and that because the Earth spins the Sun appears to move across the sky, the changing shadows produced by the Sun can be used to tell the time. Pupils then build and teat their own sundials.
Pupils investigate how shadows are made. They use a flashlight and explore the shadows made of a screen by a number of different objects. They record their results in a table by predicting and drawing shadows.
Pupils have to answer a series of light related questions which will help access their early understanding of light and shadows, light sources, reflected light and how we see. This activity can be done in discussion pairs or groups.View Resource
Pupils investigate the length of shadows during the course of a sunny day. They measure and collect results and place these results into a graph before drawing any conclusions.
Pupils look at a selection of items and predict what type of shadow they think each would make if a bright flashlight were shone in front of them - would an opaque or translucent shadow be produced, or is the object transparent, therefore no shadow would be evident?
Pupils investigate the importance of our sense of sight when carrying out everyday tasks. They also learn the importance of light sources and reflected light to our sense of sight. They also learn how difficult it would be to complete simple everyday tasks if our sense of sight was impaired.
Pupils investigate the difficulties of seeing things in the dark and how a light source helps overcome this problem. They learn that an object in a dark place can only be seen clearly when light from a light source is reflected of an object and then enters the eye.
Pupils learn that a light source is something that produces (makes) light. The Sun is the biggest and best known light source. Things that we can see that do not produce light are reflectors. Reflectors reflect light! Pupils separate light sources from light reflectors ( a cut and paste activity).
Pupils learn that a light source is something that produces light and that light sources enter our eyes and allow us to see them. They also learn that light also reflects (bounces) off objects that do not produce their own light. This reflected light helps us to see these objects. Pupils sort a number of items and objects in two groups, 'Light sources' and Light reflectors'.
Children test different materials to find out how shadows are formed.
Pupils sort pictures of light sources in order of brightness; they then sort the pictures into groups depending upon whether they are manufactured (need electricity to make them) or natural (do not need electricity to make them work).
Children sort pictures into two groups: light sources and objects which reflect light.
Children learn to distinguish between lights sources and objects which reflect light (a cut and paste activity).
Pupils learn that a light source is something that produces (makes) light. The Sun is the biggest, brightest and best known light source. Pupils complete a sorting activity where they sort images of light sources from images of objects that reflect light. Once pupils have identified the light sources they have to try and place these in order from brightest light source to dullest. Pupils have to explain their groupings and light source orders.
Children discuss what they know about the Sun and make a 'Sun Fact' display; they learn about the dangers of looking directly at the Sun.