Activities in this teaching pack include a set of differentiated worksheets to make a collection of different sized angles that can be classified as acute and obtuse using some dotted shapes for core and extension ability levels and angles that are bigger or smaller than a right angle for support ability levels.

The interactive presentation gets the children to explore how to record and classify examples of different sized acute and obtuse angles that might be found in geometric shapes.

This lesson is part of a maths scheme of work to get the children to investigate, record and compare the matching properties of different types of triangle shapes including their sets of right, acute and obtuse angles. There are teaching activities for shared learning, differentiated worksheets to support independent learning and interactive presentations to introduce concepts and key skills.