NY Next Generation Math NY-4.MD.6

Math4th GradeGeometric measurement: understand concepts of angle and measure angles.

The Standard

Measure angles in whole-number degrees using a protractor. Sketch angles of specified measure.

New York State Next Generation Mathematics Learning Standards

Teacher's field guide

What Students Need to Do: Students measure angles in whole-number degrees with a protractor and sketch angles of specified measures. They align the protractor's center and baseline correctly and choose the proper scale.
What Mastery Looks Like: A student measures an angle as 68 degrees by centering the protractor on the vertex and aligning one ray with zero. The student sketches a 115-degree angle and checks it.
Common Misconceptions: Students may place the protractor off the vertex, align the baseline incorrectly, or read the wrong scale. They may judge angle size from ray length.
How to Assess It: Give students two unlabeled angles to measure and ask them to sketch a 72-degree angle, showing the protractor alignment marks.

Lesson moves

Measure paper angles with transparent protractors, marking the vertex, baseline, scale, and final whole-number degree measure.
Ask students how they decide which protractor scale begins at zero for a given ray.
Play angle measure check by matching diagrams, protractor readings, and whole-number degree labels.
Measure and sketch angles found in signs, ramps, or simple design plans.

Free download

$Preview of the NY-4.MD.6 printable worksheet$

A ready-to-print activity worksheet aligned to NY-4.MD.6, with an answer key for the teacher on its own page. No account needed.

PDF, US Letter, prints cleanly in black and white.

Keep exploring

Grade, subject, topic, and the complete standard are prefilled. Create one free, no account needed.