MYP Maths Extended Circles & Probability – Unit E6 + assessment

MYP maths extended unit on circles and further probability, years 4–5: 5 animated lessons, worksheets and 3 criteria A–D assessments with rubrics.
Students prove and use circle theorems, find equations of circles and their tangents, calculate conditional probabilities, and draw histograms and calculate standard deviations to compare data. The unit is framed by the global context of identities and relationships.
What’s included
• 5 animated PowerPoint lessons (65 slides, plus PDF copies): Circle Theorems; Cyclic Quadrilaterals and Tangents; Equation of a Circle; Conditional Probability; Histograms and Standard Deviation
• Each lesson: inquiry question, starter, key ideas, 4 criterion-tagged worked examples, a practice task from levels 1–2 to 7–8 with a model answer, exit ticket and reflection
• 5 worksheets (Word + PDF) in three level bands, with full answers
• Task 1: Criterion A test (50 minutes, 34 marks) with markscheme and marks-to-level conversion
• Task 2: Cutting a Circle investigation (Criteria B and C), the famous 1, 2, 4, 8, 16, 31 pattern that breaks
• Task 3: Can We Trust the Test? real-life task (Criteria D and C), conditional probability and medical screening
• Teacher guide: unit planner (key and related concepts, statement of inquiry, inquiry questions), lesson plans, misconceptions and grade boundaries
Why teachers use it
Each click reveals the next line of working, so students predict before you show them. Tasks come with student rubrics, checklists, model solutions and moderation notes, and everything is editable.
Part of a full course
This is Unit E6 of the 6-unit MYP 4–5 Extended course, which complements our 10-unit Standard course. Previous unit: MYP Maths Extended Further Algebra – Unit E5 with assessment. Save over 40% with the MYP Maths 4–5 Extended Course Bundle – 6 units with assessments.
Last updated: 2 November 2026 (first version). Written for the current MYP mathematics guide (first assessment 2022). Independent resource, not endorsed by the IBO.