More Compass Construction
From Teach
Lesson Details
- Class: 8A3 (30-31 pupils)
- 15-16 boys, 15 girls
- Date: 10th November 2009
- Time: 10.25-11.15
- Room: T5
- Lesson number: 3rd in the day. Last lesson before break.
- National Curriculum (or other syllabus) area: KS3 Y8 Module 14: Shape and Measure
- Target level(s) Grades: This is a relatively low ability set.
In-Class Support
- Role of in-class support by others (where applicable): Ruth Howe will be in the class monitoring this, my third lesson. If required, she can help them with the worksheet and maintain quiet.
Learning Objectives
- Recap on different types of quadrilateral.
- Learn how to bisect an angle using compasses.
- Learn how to build out a rhombus from an isosceles triangle, using compasses.
- Learn how to construct a perpendicular bisector of a line.
- (Possibly) learn about the diagonals of a quadrilateral.
Prior Knowledge of Pupils
- Pupil prior knowledge or experience:
- Symmetry of shapes
- Rotation of images
- Measure lengths in cm using a ruler
- Parallel and Perpendicular lines
- Right, acute and obtuse angles
- Measure angles using a protractor
- Sum of angles of a triangle
- Isosceles, equilateral and right-angled triangles
- Types of Quadrilateral
- Elements of a Circle
- Constructing a Circle using Compasses
- Constructing a Triangle using Ruler and Compasses
Pupils may have not yet been taught
- Properties of different types of quadrilaterals
Class management objectives
- Focus on pace and discipline today. We need to proceed at a brisk pace, with few disruptions, in order to cover the material, and build their confidence in compass construction before we leave the topic.
ECM outcome
- Ensure everyone leaves the lesson feeling they have achieved something.
Demonstrating Learning
- How will your pupils demonstrate successful learning?
- Answers to worksheet.
- Construction of circles in their exercise books
Possible Pupil Mis-conceptions
- Confusion over definitions of circle elements
- Confusion over types of quadrilateral
Resources
- Mrs Bray's geometry tin
- Whiteboard pens
- EW pen
- 32 copies of Starter worksheet
- Mega-compasses
- Mega-Ruler
- Mega-Protractor
Risk/Safety Assessment
- Improper use of compasses. (Ensure five handed out yesterday are back in class today. Count number handed out and write that number on the board.)
- Teacher's drinking water: ensure in an upright bottle in a safe place throughout the lesson.
Assessment Opportunities
- Talk to the students on a one-to-one or one-to-few basis.
- Take in the starter worksheet afterwards.
- Move around the classroom.
- Use questioning as part of lesson.
Relationships
- Developing good working relationships:
- Help the pupils with their learning.
Opportunities for Differentiation
- Talented and Gifted students: Diagonals questions 2 and 3 in Exercise 7C.
- Not-so-able students:
- SEN: SW will not need his laptop for this lesson.
National Frameworks
- Issues related to or derived from National Strategies/Frameworks (in particular, approaches to literacy):
- Design and Technology
- Art
- Engineering
- Architecture.
Other terms they need to know
Proposed Schedule and Content
| | | | |
Pre-Entry | 2 mins | 10.25 | If possible, put a copy of the starter worksheet on each pupil's desk. | - |
Entry | 2 mins | 10.27 | Get them to line up quietly outside the classroom, then sit them according to the new seating plan. |
|
Registration | 3 mins | 10.29 | - |
|
Starter | 10 mins (5 mins for pupils to do it; 5 mins to review answers) | Review of properties of quadrilaterals | - |
|
Constructing a Rhombus using compasses from two equal sides. | 10 minutes (5 for demo; 5 for them to practice) | Suggested rhombi:
|
| - |
Bisecting an angle using compasses | 6 mins (3 for demo; 3 for them to practice) | - | Suggested angles:
| - |
Constructing a Perpendicular Bisector of a Line | 10 mins (5 for demo; 5 for them to practice) | - | Suggested lines:
|
|
Plenary ? | - | - | - | Mastermind Quiz? |
Dismiss and collect homework | 3 mins | - |
| - |
Optional Detour on My Rules | - | - | - |
|
To Do BEFORE the lesson
- Discover whether T5 is free for period 1/2.
- Get a copy of a T5 seating plan for 8Ma3
- Check out for any relevant animation on MyMaths.co.uk and WhiteboardMaths.com
- Make 32 photocopies of Diagonals worksheet.
- Make 32 copies of the Starter worksheet.
- Print off two copies of this Lesson Plan.
- Update an print off Registration spreadsheet.