Part-Part Whole & Partitioning – Year 1

Build a flexible understanding of how wholes can be partitioned into two parts. This coordinated Year 1 unit combines explicit teaching, visual models, hands-on activities, differentiated practice and assessment in one consistent resource set.

Students identify the whole and its parts, make and compare partitions to 20, find unknown parts, record related addition and subtraction equations, use make-ten partitioning and explain what changes and what stays the same. Use the complete resource as a 5–8 lesson sequence or select individual pages for maths groups, consolidation, intervention, revision, tutoring or home learning.

What's Included

• Editable 21-slide Part-Part Whole & Partitioning presentation
• Editable 22-slide quiz with 10 questions and answer slides
• 28-page A4 unit plan PDF
• Classroom Display: Parts Make a Whole
• Student Reference Mat: Partitioning Reference Mat
• Partition Picnic activity with whole cards and part-pair cards
• Build-a-Whole Mats activity with meadow mat and ten-frame challenge
• Seven differentiated worksheet pages
• Two assessment pages: Model and Record; Apply and Explain
• Nine answer pages covering all worksheets and assessment pages
• Five-level Part-Part Whole & Partitioning Rubric

Learning Focus

• Whole-and-part language
• Flexible two-part partitioning to 20
• Missing-part strategies
• Related addition and subtraction facts
• Make-ten partitioning
• Comparing representations and explaining mathematical thinking

Classroom Use

Use the presentation for explicit teaching and guided practice, the display and reference mat for visual reminders, Partition Picnic and Build-a-Whole Mats for collaborative practice, the seven worksheet pages for differentiated consolidation, and the assessments, answers and rubric for checking understanding.

Product Details

• Year level: Year 1 / Grade 1
• Subject: Mathematics
• Topic: Part-part-whole models, partitioning, missing parts, addition and subtraction facts
• File formats: PDF and editable PPTX
• Printable page count: 28 A4 pages
• Presentation: 21 slides
• Quiz: 22 slides
• Answers: Nine printable answer pages plus quiz answer slides

Curriculum Alignment

• Australian Curriculum v9.0: AC9M1N04
• Australian Curriculum v8.4: ACMNA015
• Victorian Curriculum 2.0: VC2M1N04
• New South Wales: MA1-CSQ-01
• Western Australia: ACMNA015
• Common Core: CCSS.MATH.CONTENT.1.OA.A.1, CCSS.MATH.CONTENT.1.OA.A.2, CCSS.MATH.CONTENT.1.OA.B.3, CCSS.MATH.CONTENT.1.OA.B.4, CCSS.MATH.CONTENT.1.OA.C.5, CCSS.MATH.CONTENT.1.OA.C.6, CCSS.MATH.CONTENT.1.OA.D.7, CCSS.MATH.CONTENT.1.OA.D.8, CCSS.MATH.CONTENT.1.NBT.C.4, CCSS.MATH.CONTENT.1.NBT.C.6
• United Kingdom: UK-KS1-Y2-MATH-N-A
• New Zealand: NZ-Y1-MATH-NUM-OP-3, NZ-Y1-MATH-NUM-OP-4, NZ-Y2-MATH-NUM-OP-3, NZ-Y2-MATH-NUM-OP-4
• Texas: TEKS-MATH-G1-3A, TEKS-MATH-G1-3B, TEKS-MATH-G1-3C, TEKS-MATH-G1-3D, TEKS-MATH-G1-3E, TEKS-MATH-G1-3F, TEKS-MATH-G1-5D, TEKS-MATH-G1-5E, TEKS-MATH-G1-5F, TEKS-MATH-G1-5G
• Ontario: CAN-G1-MATH-B2.1, CAN-G1-MATH-B2.2, CAN-G1-MATH-B2.3

Digital Product and Terms

This is a digital product. No physical item will be shipped. The files are for the purchaser's own classroom, tutoring or personal teaching use. Do not resell, redistribute, post publicly or share the files outside the licensed teaching setting.