Fraction Mastery Assessment

Overview

Students complete supervised assessment tasks that demonstrate their understanding of fractions and decimals in real problem contexts. The teacher observes strategies, accuracy, and mathematical reasoning.

Learning intentions

• Students will use fraction and decimal knowledge to solve problems accurately.
• Students will explain (in words or pictures) how they know a fraction or decimal represents a given situation.
• Students will choose appropriate representations and check their answers.

Success criteria

• I can identify and represent fractions as equal parts of whole or sets.
• I can connect common fractions to decimals (and vice versa) where required for my year level.
• I can solve word problems involving fractions and decimals, showing working.
• I can review my answer and correct mistakes using evidence.

Curriculum links

• Fractions and decimals in everyday contexts (using equivalence and representation)
• Interpreting and solving problems that involve sharing and measuring with fractions
• Using mathematical reasoning to justify answers and strategies
• Communicating thinking with diagrams, words, and numbers

Lesson structure (45 minutes)

1. 00–05 | Welcome and assessment goals

• Explain that today is a supervised assessment where students will show what they know.
• Remind students they can use drawings, number lines, and models, and they should read each question carefully.

2. 05–10 | Quick familiarisation (non-assessed)

• Provide 1 short practice item on the board (for example: shade a model to show a fraction, or match a fraction to a decimal).
• Students do it together and you summarise the key strategy (e.g., “count equal parts”, “use place value for decimals”).

3. 10–12 | Assessment briefing

• Go through expectations: work quietly, show thinking, check the question prompt, and attempt all parts.
• Clarify how to record: answers in the provided spaces, and working can be drawn.

4. 12–30 | Supervised assessment tasks

• Students complete the paper pack of 4–6 questions (kept short and age-appropriate):
• Part A: Represent a given fraction as a shaded model of a whole or set.
• Part B: Find a fraction of a quantity using equal sharing or repeated groups.
• Part C: Convert between a fraction with a denominator that matches the given decimal set and the decimal representation (where this is appropriate for the year group).
• Part D: Solve a word problem that requires choosing an operation or representation.
• Teacher moves around to observe strategies and note common misconceptions (without coaching answers).

5. 30–37 | Targeted check-in station (teacher-led)

• While others continue remaining questions, invite a small group (or rotate pairs) for 2–3 minutes each to explain one answer:
• “How did you know this fraction shows the situation?”
• “What does each part mean in your diagram/working?”
• Use short prompts to capture reasoning rather than to guide the correct result.

6. 37–42 | Student self-check

• Students complete a brief self-review at the end:
• Circle one question they feel confident about and write one sentence (or draw one extra detail) to justify it.
• Identify one question they would improve and what they would change.

7. 42–45 | Wrap-up and collect

• Collect responses and quickly summarise the behaviours you’re looking for: correct representation, clear working, and checking.
• Reassure students they are showing progress; next lesson will provide feedback and consolidation.

Resources

• Printed assessment tasks (4–6 questions), one per student
• Coloured pencils or crayons for shading diagrams
• Fraction circles/rectangles or paper models (optional included with the pack)
• Student number lines (0 to 1, marked in tenths or given partitions as required)
• Clear recording spaces and a brief self-check section
• Teacher checklist for observations (accuracy, representations used, reasoning quality)
• Timer for task pacing
• Board or visual example for the initial familiarisation question

Assessment

• Marking will focus on:
• Correct identification and representation of fractions (equal parts of a whole or set)
• Reasoning evidence shown through diagrams/number lines and written explanations
• Correct connection between fractions and decimals where assessed
• Teacher observation notes during the check-in station (strategy choice, misconceptions, communication).
• Student self-check response to indicate confidence and understanding.

Differentiation

• Support:
• Provide pre-drawn fraction models and a number line template for students who need scaffolding.
• Offer a quiet “first read” of the question with examples of what the diagram is asking for (without giving the answer).
• Extension:
• Include an additional “explain your method” prompt on one question for students ready to justify more deeply (e.g., compare two representations).
• EAL:
• Use simple language in the assessment instructions and ensure word problems include visual cues (pictures of sharing/parts).
• Allow explanations using drawings or partial sentences.
• SEN:
• Reduce the number of items if necessary while keeping the same key skills, and provide extra time.
• Offer assistive tools (fraction manipulatives) during working time.