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Parts of a circle

CONCEPTUAL
Mathematics›Geometry|Ages 10—11|ID: mt_xq3YHZ2zeR

Illustrate and name parts of circles, including radius, diameter, and circumference; know that the diameter is twice the radius

Mastery Evidence

  • Label the radius, diameter, and circumference on a circle diagram
  • Calculate the diameter given a radius of 4.5 cm (diameter = 9 cm)
  • Explain the relationship between radius and diameter in their own words

Assessment Prompt

“If you give [child] a round plate and a ruler, can they measure the diameter — and explain how the radius compares to the diameter?”

Prerequisites0

No prerequisites — this is a foundational topic.

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