Maths KS2: Finding lines of symmetry
In order for Karate Kid, Ethan Measure, to win the symmetry medal, he must find the line of symmetry on various objects and karate chop along that line.
An explanation of finding a line of symmetry is given and demonstrated using a mirror.
Ethan then has to chop a pineapple. At first he gets it wrong, checking in the mirror.
Ethan’s mum has prepared a selection of objects for him to practise on.
Three questions of increasing difficulty challenge us to identify the line or lines of symmetry, while we learn that some objects are not symmetrical at all.
This is from the series: Let's Do Maths
Teacher Notes
Ask pupils to draw what they deem to be symmetrical and asymmetrical and discuss the different words they associate with it.
Using the clip, show the different objects on the table and pause it.
Ask the children to discuss which are symmetrical and which aren't and use the interactive whiteboard to get the children to draw it on, using a dashed line.
With a variety of everyday objects, signs or symbols the children can identify the lines of symmetry on them.
Using a sorting diagram, the children can either sort a range of objects based on their symmetrical properties, or they can generate patterns using different apparatus, so they could fit in the different sorting diagrams.
Curriculum Notes
This clip will be relevant for teaching Maths at KS2 in England and Wales, Early and First Level and Second Level in Scotland and KS1 and KS2 in Northern Ireland.
