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Grade 1

TEKS Math Standard: 1.6.A

classify and sort regular and irregular two-dimensional shapes based on attributes using informal geometric language

What’s In My Brain: H vs Arrow
What’s In My Brain: H vs Arrow
Two columns. One is an example, one isn’t. Can you figure out the hidden rule before the big reveal?
Gr 1, 2, 3, 4, 5, 8
What’s In My Brain: Pentagon vs Pentagon
What’s In My Brain: Pentagon vs Pentagon
We’re looking at regular vs irregular polygons.
Gr 2-8
Grouping Shapes by Parallel and Perpendicular Sides
Grouping Shapes by Parallel and Perpendicular Sides
Which shapes go together based on parallel and perpendicular lines?
Gr 4
Letters With Symmetry
Letters With Symmetry
Let’s group letters by their symmetry, then create symmetrical words, and then symmetrical sentences!
Gr 4
Geometry Image: Esplanade Theaters
Geometry Image: Esplanade Theaters
What odd and interesting shapes can your students find in this geometric image?
Gr 3-5
Geometry Image: University Ave
Geometry Image: University Ave
What odd and interesting shapes can your students find in this geometric image?
Gr 3-5
Geometry Image: Victoria Conference Center
Geometry Image: Victoria Conference Center
What odd and interesting shapes can your students find in this geometric image?
Gr 3-5
Geometry Image: Skytree
Geometry Image: Skytree
What odd and interesting shapes can your students find in this geometric image?
Gr 3-5
Geometry Image: Steigerwald
Geometry Image: Steigerwald
What odd and interesting shapes can your students find in this geometric image?
Gr 3-5
What’s In My Brain: Trapezoids or Not?
What’s In My Brain: Trapezoids or Not?
Which are trapezoids and which are not?
Gr 2-8
Grouping Quadrilaterals In A Hierarchy
Grouping Quadrilaterals In A Hierarchy
Can we classify quadrilaterals like we classify living things?
Gr 1-5
Fractals: Sierpinski’s Triangle
Fractals: Sierpinski’s Triangle
What if this triangle pattern just kept repeating… forever!?
Fractals: Koch Snowflake
Fractals: Koch Snowflake
You could keep zooming in on this snowflake forever!