Grade 4
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Geometry
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Measurement & Data
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Numbers & Operations: Base Ten
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Numbers & Operations: Fractions
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Operations & Algebraic Thinking
CCSS Math Standard: 4.G.1
Draw points, lines, line segments, rays, angles (right, acute, obtuse), and perpendicular and parallel lines. Identify these in two-dimensional figures.
Grouping Shapes by Parallel and Perpendicular Sides
Which shapes go together based on parallel and perpendicular lines?
Perpendicular Lines or Not? – Concept Attainment
In this concept attainment lesson, students try to determine if lines are perpendicular or not
Angles of a Triangle
Why tell a kid the rules of a triangle when they can discover them!?
Lines, Line Segments, Rays, and Infinity!
A lesson about lines, line segments, and rays that avoids dull memorization. Instead, we ponder this delightful question: Which is longer, a ray or a line? Then, kids consider what these different geometric concepts would think about each other.