← All Standards

Grade 4

• Strand 1

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

• Strand 2

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

• Strand 3

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

• Strand 4

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

• Strand 5

  • 4.5.A
  • 4.5.B
  • 4.5.C
  • 4.5.D

• Strand 6

  • 4.6.A
  • 4.6.B
  • 4.6.C
  • 4.6.D

• Strand 7

  • 4.7.A
  • 4.7.B
  • 4.7.C
  • 4.7.D
  • 4.7.E

• Strand 8

  • 4.8.A
  • 4.8.B
  • 4.8.C

• Strand 9

  • 4.9.A
  • 4.9.B

• Strand 10

  • 4.10.A
  • 4.10.B
  • 4.10.C
  • 4.10.D
  • 4.10.E

TEKS Math Standard: 4.1.G

display, explain, and justify mathematical ideas and arguments using precise mathematical language in written or oral communication

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.

Gr 2-8

Math Curiosity: Legendre’s Conjecture

It seems like there’s always a prime number between two perfect squares… but is this always the case!?

Gr 3-6