**Lines and angles - fifth and sixth class **

Content for fifth class

*The child should be enabled to*

- Recognise, classify and describe angles and relate angles to shape and the environment?

*Explore and compare a wide variety of angles and shapes measure and record angles as acute, obtuse, reflex or right angles, and determine the number of such angles in relation to common regular shapes?* - Recognise angles in terms of a rotation.

*Examine, measure and record the angles (including the reflex angle) formed by the hands of a clock at a variety of different times.*

Extend by using manipulatives, e.g. straws, lollipop sticks, Meccano, string, 360 protractor, LOGO computer language if available? - Estimate, measure and construct angles in degrees?

*Measure and record a wide variety of angles using a protractor.*

Construct angles of various sizes using a protractor.

Estimate angle sizes and check by measuring with a protractor. - Explore the sum of the angles in a triangle?

*Cut off the three corners of a paper triangle and put them together to make 180 degrees.*

Measure the angles in a variety of triangles using a protractor.

Calculate and record their sum.

Examine and discuss results.

Content for sixth class

*The child should be enabled to*

- Recognise, classify and describe angles and relate angles to shape

e.g.*identify types of angles in the environment?* - Recognise angles in terms of a rotation?
- Estimate, measure and construct angles in degrees
- Explore the sum of the angles in a quadrilateral?

*Cut off the four corners of a paper quadrilateral and put them together to make 360 degrees. Measure the angles in a variety of quadrilaterals and calculate their sums.*