Circles and Chords
Introduction to circles, radius, diameter, and chords. Students explore theorems related to perpendiculars from the center to a chord.
About This Topic
Introduction to circles, radius, diameter, and chords. Students explore theorems related to perpendiculars from the center to a chord.
Key Questions
- What is the relationship between a chord and the center of a circle?
- How do equal chords behave in a circle?
- What happens when a perpendicular is drawn from the center to a chord?
Planning templates for Mathematics
5E Model
The 5E Model structures lessons through five phases (Engage, Explore, Explain, Elaborate, and Evaluate), guiding students from curiosity to deep understanding through inquiry-based learning.
Unit PlannerMath Unit
Plan a multi-week math unit with conceptual coherence: from building number sense and procedural fluency to applying skills in context and developing mathematical reasoning across a connected sequence of lessons.
RubricMath Rubric
Build a math rubric that assesses problem-solving, mathematical reasoning, and communication alongside procedural accuracy, giving students feedback on how they think, not just whether they got the right answer.
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