Expanding:2D Shape: Quadrilaterals 2 (Investigation)

Vocabulary

angle, acute, obtuse, interior

opposite, adjacent, equal

parallel, perpendicular

polygon, perimeter, diagonal

quadrilateral, square, oblong

rectangle, rhombus, kite

parallelogram, trapezium

Hints and Tips

Quadrilaterals

Your child has had the opportunity to investigate triangles.

Now he/she will be exploring quadrilaterals in more detail.

Remember that quadrilateral just means "four sides" so a quadrilateral has four-sides, it is 2-dimensional (a flat shape), closed (the lines join up), and has straight sides.

Essential Prior Knowledge

Recording systematically

Looking for patterns

Persevering

Activity

This is a discussion and discovery activity about shapes and their properties.

Ask your child to either find pictures of, or draw quadrilaterals. He/she can either construct a chart or make a poster like ours.

 Things to think about:

 

·         Sides and their relationships e.g. length, parallel, perpendicular, opposite

·         Angle sizes e.g. obtuse, acute

·         Diagonals and how they meet

 

Encourage your child to draw each quadrilateral in a number of ways. Remember to draw or find both regular and irregular forms of each shape.