Enlargements – Year 5 Maths Unit
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Teach enlargements through a coherent one-week sequence that balances calculation, construction and mathematical explanation. Students begin with a geometry readiness review, identify one consistent scale factor, calculate original and enlarged lengths, and connect scale factor to perimeter and area.
The unit then moves into regular and irregular grid construction, error analysis and reasoning about what changes or remains invariant. A three-page Scale Factor Match and Sort activity and four-page Grid Enlargement Studio game support collaborative consolidation. The Park Logo Enlargement Challenge provides a fresh assessment context, with matching answer pages and a five-level rubric for efficient marking.
The 40-page printable unit plan is supported by an editable 21-slide lesson presentation and a 22-slide editable quiz with 10 question-and-answer pairs. All presentation and quiz text remains native and editable in the locked Sukindi Maths PowerPoint design.
WHAT'S INCLUDED
Editable PowerPoint presentation: Enlargements — 21 slides.
Editable PowerPoint quiz: Enlargements Quiz — 22 slides with 10 question-and-answer pairs.
Unit Plan PDF — 40 pages, including the clean Sukindi table-of-contents cover.
Classroom Display: Enlargement Essentials — 1 colour page.
Worksheet 1: Geometry Readiness Review — 2 student pages and 2 answer pages.
Worksheet 2: Scale Factor Detective — 2 student pages and 2 answer pages.
Worksheet 3: Perimeter and Area Patterns — 2 student pages and 2 answer pages.
Worksheet 4: Regular Shapes on Dot Grids — 2 student pages and 2 answer pages.
Worksheet 5: Irregular Shapes on Square Grids — 3 student pages and 3 answer pages.
Worksheet 6: What Changes? What Stays the Same? — 2 student pages and 2 answer pages.
Activity: Scale Factor Match and Sort — 3 colour pages.
Game: Grid Enlargement Studio — 4 colour pages.
Assessment: Park Logo Enlargement Challenge — 2 student pages and 2 answer pages.
Rubric: Enlargements – Year 5 Rubric — 1 black-and-white landscape page.
Answer key: 15 matching worksheet and assessment answer pages in total.
LEARNING FOCUS
Recognise an enlargement as uniform scaling by one scale factor.
Calculate enlarged lengths and work backwards to original lengths.
Explain why perimeter changes by k and area changes by k².
Identify corresponding sides, equal angles and proportional relationships.
Construct regular and irregular enlargements on dot and square grids.
Explain what changes and what stays the same under a transformation.
CLASSROOM USE
Use the presentation to introduce and model concepts, select the differentiated worksheet pages for guided or independent practice, rotate the activity and game through small groups, use the quiz for retrieval practice, and finish with the two-page Park Logo Enlargement Challenge. The complete sequence supports approximately five lessons plus assessment.
YEAR / SUBJECT / TOPIC
Year level: Year 5 / Grade 5
Subject: Maths
Topic: Enlargements, scale factor, perimeter, area, proportional sides and grid construction
CURRICULUM ALIGNMENT
Australian Curriculum Version 9.0: AC9M5SP03
Australian Curriculum Version 8.4: ACMMG114, ACMMG115
Victoria Curriculum 2.0: VC2M5SP03
New South Wales: MA3-2DS-01
Western Australia: ACMMG114, ACMMG115
Common Core: CCSS.MATH.CONTENT.4.G.A.3, CCSS.MATH.CONTENT.5.G.B.3, CCSS.MATH.CONTENT.5.G.B.4, CCSS.MATH.CONTENT.6.G.A.3
United Kingdom: UK-UKS2-Y6-MATH-G-S, UK-UKS2-Y6-MATH-G-P
New Zealand: NZ-Y5-MATH-GEO-SR-2, NZ-Y6-MATH-GEO-SR-2
Texas: TEKS-MATH-G5-1F, TEKS-MATH-G5-6B
Ontario: CAN-G5-MATH-E1.2, CAN-G5-MATH-E1.5
Alignment note: AC9M5SP03 emphasises transformations and reasoning about change and invariance. The unit applies that reasoning in an enlargement context and retains the mapped ACMMG115 enlargement link.
FORMATS / PAGE COUNT / ANSWERS
Customer formats: PDF and editable PPTX
Printable unit plan: 40 pages
Editable presentation: 21 slides
Editable quiz: 22 slides
Answer-key status: Included — 15 matching answer pages
TEACHER BENEFITS
A sequenced week of teaching from readiness to assessed application.
Separate support, core and extension opportunities across the practice set.
Matching answer layouts reduce marking time and make feedback clear.
Colour displays, activities and games are separated from black-and-white print practice.
Native editable PowerPoint teaching and quiz text supports classroom adaptation.
DIGITAL PRODUCT AND LICENCE NOTE
This is a digital product; no physical item will be shipped. Files are licensed for the purchasing teacher's, classroom's or household's use under the applicable Sukindi licence. Do not resell, redistribute, upload publicly or share outside the licensed setting.
