← All Standards

Grade 2

• Geometry

  • 2.G.1
  • 2.G.3

• Measurement & Data

  • 2.MD.8
  • 2.MD.10

• Numbers & Operations: Base Ten

  • 2.NBT.2
  • 2.NBT.4
  • 2.NBT.5
  • 2.NBT.6
  • 2.NBT.7
  • 2.NBT.8
  • 2.NBT.9

• Operations & Algebraic Thinking

  • 2.OA.1
  • 2.OA.2
  • 2.OA.3

CCSS Math Standard: 2.NBT.2

count within 1000; skip-count by 5s, 10s, and 100s

Math Curiosity: Ulam Spiral

What if we make a huge spiral of numbers and then highlight only the primes? Well, a bunch of weird patterns show up!

Gr 1-4

Math Curiosity: Finding Primes

Prime numbers are unpredictable! How can we possibly find them all? An Ancient Greek mathematician found one way!

Gr 1, 2, 3, 4, 6

Math Curiosity: Collatz Conjecture

The Collatz Conjecture: start with any number and get to 1 using just two rules. It seems to always work…

Gr 1-5