← All Standards

Grade 1

• Strand 1

  • 1.1.A
  • 1.1.B
  • 1.1.C
  • 1.1.D
  • 1.1.E
  • 1.1.F
  • 1.1.G

• Strand 2

  • 1.2.A
  • 1.2.B
  • 1.2.C
  • 1.2.D
  • 1.2.E
  • 1.2.F
  • 1.2.G

• Strand 3

  • 1.3.A
  • 1.3.B
  • 1.3.C
  • 1.3.D
  • 1.3.E
  • 1.3.F

• Strand 4

  • 1.4.A
  • 1.4.B
  • 1.4.C

• Strand 5

  • 1.5.A
  • 1.5.B
  • 1.5.C
  • 1.5.D
  • 1.5.E
  • 1.5.F
  • 1.5.G

• Strand 6

  • 1.6.A
  • 1.6.B
  • 1.6.C
  • 1.6.D
  • 1.6.E
  • 1.6.F
  • 1.6.G
  • 1.6.H

• Strand 7

  • 1.7.A
  • 1.7.B
  • 1.7.C
  • 1.7.D
  • 1.7.E

• Strand 8

  • 1.8.A
  • 1.8.B
  • 1.8.C

• Strand 9

  • 1.9.A
  • 1.9.B
  • 1.9.C
  • 1.9.D

TEKS Math Standard: 1.6.D

identify two-dimensional shapes, including circles, triangles, rectangles, and squares, as special rectangles, rhombuses, and hexagons and describe their attributes using formal geometric language

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

We’re looking at regular vs irregular polygons.

Gr 1-8

Grouping Shapes by Parallel and Perpendicular Sides

Which shapes go together based on parallel and perpendicular lines?

Gr 1, 2, 3, 4, 5, 8

Math Curiosity: Magic Triangles

Can you make each side of this triangle add up to 9 using the digits 1-6?

Gr 1, 2, 3, 4, 8

Geometry Image: Esplanade Theaters

What odd and interesting shapes can your students find in this geometric image?

Gr 1, 2, 3, 4, 5, 8

Geometry Image: University Ave

What odd and interesting shapes can your students find in this geometric image?

Gr 1-5

Geometry Image: Victoria Conference Center

What odd and interesting shapes can your students find in this geometric image?

Gr 1-5

Geometry Image: Skytree

What odd and interesting shapes can your students find in this geometric image?

Gr 1, 2, 3, 4, 5, 7, 8

Geometry Image: Steigerwald

What odd and interesting shapes can your students find in this geometric image?

Gr 1, 2, 3, 4, 5, 7

Math Curiosity: Klauber’s Triangle

In 1932, a leading authority on rattlesnakes, Laurence Klauber, discovered a startling pattern within a triangle of primes.

Gr 1-5

What’s In My Brain: Trapezoids or Not?

Which are trapezoids and which are not?

Gr 1-8

The Angles of a Triangle

Why tell a kid the rules of a triangle when they can discover them!?

Gr 1, 2, 3, 4, 5, 7, 8

Grouping Quadrilaterals In A Hierarchy

Can we classify quadrilaterals like we classify living things?

Gr 1-5

Fractals: Sierpinski’s Triangle

What if this triangle pattern just kept repeating… forever!?

Fractals: Koch Snowflake

You could keep zooming in on this snowflake forever!