Angle Hunters Worksheet
Official Field Log
ANGLE DETECTIVE MISSION
Level: 5th Grade
ID: #45-90-180-HUNT
Agent Name: ___________________________
Date: _______________
Sector/Room: ________
MISSION STATEMENT: Identify items in your classroom environment that match key benchmark angles. CRITICAL PROTOCOL: You MUST estimate the angle type (Acute, Right, Obtuse, Straight) and its degrees BEFORE using your protractor to measure!
Phase 1: Hunt for the Benchmarks (45°, 90°, 180°)
Target #1: The Perfect Corner (90°) Right Angle Benchmark
Classroom Object Found:
1. Estimate Angle Type:
Acute Right Obtuse
2. Est. Degrees: ______°
3. Protractor Measure:
___________ degrees (°)
Sketch Angle Here
Target #2: The Half-Corner (45°) Acute Angle Benchmark
Classroom Object Found:
1. Estimate Angle Type:
Acute Right Obtuse
2. Est. Degrees: ______°
3. Protractor Measure:
___________ degrees (°)
Sketch Angle Here
Target #3: The Straight Line (180°) Straight Angle Benchmark
Classroom Object Found:
1. Estimate Angle Type:
Obtuse Straight
2. Est. Degrees: ______°
3. Protractor Measure:
___________ degrees (°)
Sketch Angle Here
Turn page for Phase 2: Wildcard Classification Hunt Page 1 of 2
Official Field Log
ANGLE DETECTIVE MISSION
Phase 2 Dossier
Phase 2: Wildcard Classification Hunt
Deploy further into your sector and find elements representing specific classifications. Be careful with scale direction!
Target #4: Any Acute Angle (<90°) Must be smaller than a Right Angle
Classroom Object Found:
1. Estimate Angle Type:
Acute Angle (<90°)
2. Est. Degrees: ______°
3. Protractor Measure:
______________ degrees (°)
Sketch Angle Here
Target #5: Any Obtuse Angle (>90°) Must be larger than a Right Angle
Classroom Object Found:
1. Estimate Angle Type:
Obtuse Angle (>90°)
2. Est. Degrees: ______°
3. Protractor Measure:
______________ degrees (°)
Sketch Angle Here
Phase 3: Reflection & Debrief
1. What is your go-to strategy for telling the difference between an acute angle and an obtuse angle BEFORE measuring?
2. When measuring Target #5 (Obtuse), did your estimate help you choose the correct scale on the protractor? Explain why protractors have two sets of numbers.
Case Evidence Complete Page 2 of 2
