Solve problems involving missing coordinates

I can solve problems involving missing coordinates

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Year 6

Solve problems involving missing coordinates

I can solve problems involving missing coordinates

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Lesson details

Key learning points

Coordinate grids are not always presented with grid lines, and the axes are not always fully-labelled.
When this is the case, it is essential to consider the known coordinates to work out missing coordinates.
Missing coordinates sometimes appear on the same horizontal or vertical line as known coordinates, so they are the same.
Sometimes we need to use known vertices to calculate unknown side lengths when working out missing coordinates.

Keywords

Congruent - If two shapes are the same shape and size as each other, they are congruent.
Vertex / vertices - A vertex is where two or more line segments meet. The plural is vertices.

Common misconception

Pupils need to have proficiency in bridging across zero with negative numbers, in the range of −10 to 10. Grid lines that might help to support such calculations are not given in this lesson.

Pupils not secure will need a resource within the lesson to support their calculations, such as a number line going from −10 to 10.

Discourage pupils from estimating the missing coordinates based on their position along the axes as this is likely to lead to errors. Encourage them instead to use their adding and subtracting skills with questions involving negative numbers.

Teacher tip

Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).