Grade 4 Math Grading Rubric: Angles — Naming, Estimating, Measuring, Explaining

Learning Objectives

• Describe an angle as an amount of turn, and name the arms and the vertex.
• Identify and name acute, right, obtuse and straight angles.
• Estimate the size of an angle using 90° and 180° as benchmarks.
• Measure angles to the nearest degree with a protractor.
• Find a missing angle when angles join to make a right angle (90°) or a straight angle (180°).

How to Use This Resource

• Share the rubric with students before the task so they know what success looks like.
• Circle one level per skill for each student; add the points (maximum 16).
• Record scores on the record sheet.

Differentiation

Support: Use the paper right-angle checker for every question before naming the angle. Challenge: Introduce reflex angles (more than 180°) and measure them as 360° minus the small angle. English language learners: Pair words with gestures: arms open small (acute), arms in an L (right), arms open wide (obtuse), arms in a line (straight).

Teacher Tips

Make the right-angle checker in lesson 1 — students use it all week. Estimation first, measuring second: it stops most protractor errors.

What's Included

• 4 skills × 4 levels (Excellent, Good, Developing, Beginning)
• Task: Performance task: "Angle Detective" — find 4 angles around school, draw them, name, estimate and measure each one.
• Class record sheet
• Score bands: 14–16 = Excellent, 10–13 = Good, 6–9 = Developing, 4–5 = Beginning.

Additional Files

• Grade 4 Math Grading Rubric: Angles — Naming, Estimating, Measuring, Explaining (DOCX)

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