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Finding lines of symmetry | Maths - Let's do Maths

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Added by lbrown in Maths
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Description

Suitable for 7-8s.
Karate Kid, Ethan Measure, needs to identify lines of symmetry and chop along them to win a medal, in this clip exploring the basics of symmetry.

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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, as shown when he checks it in the mirror. Ethan’s mum has prepared a selection of objects for him to practice 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 clip is from the BBC series Let\'s do maths. These videos are lesson starters for teachers of Key Stage 2 maths. They explore space, shape and measure and each ends with three questions increasing in levels of difficulty.

For more clips from Let\'s Do Maths: http://bit.ly/bit.ly/TeachLDMaths
For our Maths playlist: http://bit.ly/BBCTeachMaths
For our Primary Maths playlist: http://bit.ly/TeachPrimaryMaths

For Class Clips users, the original reference for the clip was p0119bvl.

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Teaching Maths?

Get the children to draw what they deem to be symmetrical and asymmetrical shapes or objects and discuss the different words they associate with it. Using the clip, show the different objects on the table and pause it. Get the children to discuss which are symmetrical and which aren\'t and use the interactive whiteboard to get the children to draw the lines 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.

This clip will be relevant for teaching Maths. This topic appears in KS2 in England, Wales and Northern Ireland and 1st/2nd level in Scotland.

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For more clips from other subjects at the BBC Teach YouTube channel: http://www.youtube.com/bbcteach
More resources for teachers from the BBC: http://www.bbc.co.uk/teach
More from BBC Learning Zone: http://www.bbc.co.uk/learningzone
More resources from BBC Bitesize: http://www.bbc.co.uk/education

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