CCSS.Math.Content.4.MD.C.6
The Standard
Measure angles in whole-number degrees using a protractor. Sketch angles of specified measure.
Common Core State Standards for Mathematics · Measurement and Data
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students use a protractor to find an angle’s measure in whole degrees. They also draw angles with given measures and check their drawings for accuracy.
What Mastery Looks Like
- Students align a protractor’s center and zero line correctly, choose the right scale, and record an accurate whole-number measure. They can also sketch a requested angle and verify it with a protractor.
Common Misconceptions
- Students may place the protractor’s center away from the vertex or fail to line up one ray with zero. They may read the wrong number scale or think longer rays make a larger angle.
How to Assess It
- Give students a protractor and ask: “Measure the angle shown, then draw a different angle measuring 125°.” Check alignment, scale choice, and accuracy.
Lesson moves
Ways to Teach It
Use craft sticks joined with a fastener to build five angles, then measure each angle with a protractor.
Show two angles with different ray lengths and ask students to explain which is larger and what evidence proves it.
Play Angle Match by pairing cards showing angle diagrams, degree measures, and names such as acute, right, or obtuse.
Examine clock hands at several times, estimate each smaller angle, then draw and measure the angles with protractors.
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Printable 4.MD.C.6 Worksheet
A ready-to-print activity worksheet aligned to CCSS.Math.Content.4.MD.C.6, with an answer key for the teacher on its own page. No account needed.
PDF, US Letter, prints cleanly in black and white.
Download the worksheetLearning progression
Where This Standard Sits
See the whole path on the Measurement & Data progression map.
Before This Standard
If students are struggling here, check these first.
- CCSS.Math.Content.4.MD.C.5b
Understanding degrees as counts of one-degree units supports reading protractor scales and sketching angles with a specified measure.
- CCSS.Math.Content.4.MD.C.5
Students need to understand angles as ray pairs and degrees as angle units before measuring or drawing angles with a protractor.
- CCSS.Math.Content.4.G.A.1
Students must recognize and draw angles and their rays before they can measure them with protractors or sketch specified degrees.
What This Unlocks
Mastery here sets students up for these next.
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Related Standards
- CCSS.Math.Content.7.G.A.2
Draw (freehand, with ruler and protractor, and with technology) geometric shapes with given conditions. Focus on constructing triangles from three measures of a...
- CCSS.Math.Content.4.MD.C
Geometric measurement: understand concepts of angle and measure angles.
- CCSS.Math.Content.8.G.A.1b
Angles are taken to angles of the same measure.
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