Grade 4
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Geometry
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Measurement & Data
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Number & Operations: Base Ten
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Number & Operations: Fractions
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Operations & Algebraic Thinking
Arizona Math Standard: 4.G.A.2
Classify two-dimensional figures based on the presence or absence of parallel or perpendicular lines, or the presence or absence of angles of a specified size (e.g., understand right triangles as a category, and identify right triangles).
What’s In My Brain: Pentagon vs Pentagon
We’re looking at regular vs irregular polygons.
Grouping Shapes by Parallel and Perpendicular Sides
Which shapes go together based on parallel and perpendicular lines?
Geometry Image: Esplanade Theaters
What odd and interesting shapes can your students find in this geometric image?
Geometry Image: University Ave
What odd and interesting shapes can your students find in this geometric image?
Geometry Image: Victoria Conference Center
What odd and interesting shapes can your students find in this geometric image?
Geometry Image: Skytree
What odd and interesting shapes can your students find in this geometric image?
Geometry Image: Steigerwald
What odd and interesting shapes can your students find in this geometric image?
What’s In My Brain: Trapezoids or Not?
Which are trapezoids and which are not?
Math Curiosity: The Coloring Problem
No video gets me more email from students! How few colors can you use to color in any map so that no two, neighboring regions are the same color?
Grouping Quadrilaterals In A Hierarchy
Can we classify quadrilaterals like we classify living things?