Higher GCSE: Angles Lesson 2: Parallel Lines, Special triangles, Special Quadrilaterals

All lessons have the same structure to support establishing routines and expectations. Individual whiteboards are suggested to support whole class feedback and formative assessment throughout learning. The PowerPoint for each lesson is animated ready for delivery and is also editable so that you can remove some of the work through elements if you prefer to model things live.

Starter = Do now activity of 4 retrieval questions. Each question has a second practice question if needed to reinforce retrieval practice. Full worked through solutions which can be omitted if you prefer to model solutions live.

Notes and worked examples following an “I do” then “we do” approach. Language is clear and unambiguous. Unnecessary visuals and words are avoided to support with cognitive load. Text is integrated into diagrams to avoid split attention. Full working is given but can be deleted if you prefer to model examples live. Solutions are broken down into small steps; some steps may be removed when class are able to follow working with greater ease.

Then independent practice questions with answers to reveal when ready. Separate worksheets of questions are provided for printed copies if preferred.

Each section of the lesson has the “I do”, “We do”, “Independent practice” cycle for learning.

Worksheets cover all independent practice as separate documents. Version 2 reduces the printing for each set.

Topics covered in this lesson are as follows:
Terminology: parallel lines, transversal line
Corresponding angles are equal
Alternate angles are equal
Interior angles add up to 180°
Examples on applying parallel angle rules
Independent practice on applying and explaining parallel line rules
Independent practice on applying parallel line rules alongside solving equations.
Review of special triangles including angle properties
Review of special quadrilaterals including angle properties
Independent practice on applying properties of special quadrilaterals including parallel line rules.

Student notes are included as a separate document which can be printed for sticking into student notes to reduce the need for copying from the board. Summary notes are given at the end of the lesson for a review of learning.