← All Standards

Grade 1

• Numbers & Operations: Base Ten

  • 1.NBT.1
  • 1.NBT.4

• Operations & Algebraic Thinking

  • 1.OA.1
  • 1.OA.2
  • 1.OA.3
  • 1.OA.4
  • 1.OA.5
  • 1.OA.6
  • 1.OA.7
  • 1.OA.8

CCSS Math Standard: 1.OA.7

understand the meaning of the equal sign, and determine if equations involving addition and subtraction are true or false (e.g., Which of the following equations are true and which are false? 6 = 6, 7 = 8 – 1, 5 + 2 = 2 + 5, 4 + 1 = 5 + 2)

Math Curiosity: Goldbach’s Conjecture

Can any even number be written as the sum of two primes? Goldbach thought so, but we haven’t proven it… yet!

Gr MP-5

Math Curiosity: Odds & Squares

Why does the sum of the first 5 odds also equal 5 squared?

Gr MP-4

Math Curiosity: Palindromic Number Conjecture

Using this one weird trick, it seems that you can turn any number into a palindrome!

Gr MP-4