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27th April

27th April: Enlargements

Enlargements is on the leaving certificate maths syllabus for foundation, ordinary and higher level students.

Learning Outcomes

2.4 Transformation geometry, enlargements
– investigate enlargements and their effect on area, paying attention to
• centre of enlargement
• scale factor k where 0<k<1, k>1 k Î Q
– solve problems involving enlargements

Introduction
Explanatory Videos
Geogebra Files and Associated Worksheets
SEC Exam Questions

Enlargements Introduction

https://www.scoilnet.ieuploads/resources/32720/32462.pdf Added: 24 Apr 2020 Contributor: PDST Resource type: Guide/notes

Short introduction to enlargements (dilations)

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Mathematics

Strand: 2. Geometry & Trigonometry

Strand unit: 4. Transformation Geometry, Enlargements

Suggestions for use: Can be used at the very start of introducing the topic of enlargements

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Enlargements Teaching & Learning Plan

https://www.scoilnet.ieuploads/resources/32721/32463.docx Added: 24 Apr 2020 Contributor: PDST Resource type: Lesson Plan

Teaching & Learning Plan developed by teachers

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Mathematics

Strand: 2. Geometry & Trigonometry

Strand unit: 4. Transformation Geometry, Enlargements

Suggestions for use: Students need paper, scissors and glue

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Enlargements - Scale Factor (k)

https://www.youtube.com/watch?v=2OweFAiqNwA Added: 25 Jul 2018 Contributor: UCD MSC Resource type: Audio / Video

Video describes what a scale factor is in terms of transformation and demonstrates how to calculate the scale factor in numerous different examples.

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Mathematics

Strand: 2. Geometry & Trigonometry

Strand unit: 4. Transformation Geometry, Enlargements

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Centre of Enlargement

https://www.youtube.com/watch?v=nSEJrvGLo4M Added: 25 Jul 2018 Contributor: UCD MSC Resource type: Audio / Video

Video demonstrates how students can find the centre of enlargement by drawing lines through the corresponding vertices of the object and the image.

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Mathematics

Strand: 2. Geometry & Trigonometry

Strand unit: 4. Transformation Geometry, Enlargements

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Scale Factor and Area

https://www.youtube.com/watch?v=EHBkcLf6c2w Added: 25 Jul 2018 Contributor: UCD MSC Resource type: Audio / Video

Video explains the property of enlargement known as 'Scale Factor and Area' and illustrates how to solve certain mathematical questions relating to the property. Two worked examples provided.

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Mathematics

Strand: 2. Geometry & Trigonometry

Strand unit: 4. Transformation Geometry, Enlargements

Suggestions for use: Students could attempt the question prior to watching the video and then use the video as a self-assessment tool.

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Transformations - Leaving Certificate

https://www.scoilnet.ie/pdst/maths/...metry-trigonometry/transformations/ Added: 09 Nov 2019 Contributor: PDST Resource type: Guide/notes / Simulation

Geogebra interactive files and student worksheets demonstrating transformations including translations, reflections and enlargements.

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Mathematics

Strand: 2. Geometry & Trigonometry

Strand unit: 4. Transformation Geometry, Enlargements

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2017 FL Q8

https://www.scoilnet.ieuploads/resources/32715/32457.pdf Added: 24 Apr 2020 Contributor: PDST Resource type: Exam Papers

SEC Enlargement question

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Mathematics

Strand: 2. Geometry & Trigonometry

Strand unit: 4. Transformation Geometry, Enlargements

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2018 FL Q9

https://www.scoilnet.ieuploads/resources/32716/32458.pdf Added: 24 Apr 2020 Contributor: PDST Resource type: Exam Papers

SEC Enlargement question

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Mathematics

Strand: 2. Geometry & Trigonometry

Strand unit: 4. Transformation Geometry, Enlargements

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2015 OL Q7

https://www.scoilnet.ieuploads/resources/32717/32459.pdf Added: 24 Apr 2020 Contributor: PDST Resource type: Exam Papers

SEC Enlargement question

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Mathematics

Strand: 2. Geometry & Trigonometry

Strand unit: 4. Transformation Geometry, Enlargements

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2017 OL Q8

https://www.scoilnet.ieuploads/resources/32718/32460.pdf Added: 24 Apr 2020 Contributor: PDST Resource type:

SEC Enlargement question

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Mathematics

Strand: 2. Geometry & Trigonometry

Strand unit: 4. Transformation Geometry, Enlargements

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2011 HL Q4

https://www.scoilnet.ieuploads/resources/32719/32461.pdf Added: 24 Apr 2020 Contributor: PDST Resource type:

SEC Enlargement question

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Mathematics

Strand: 2. Geometry & Trigonometry

Strand unit: 4. Transformation Geometry, Enlargements

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