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Grade 4

• Geometry

  • 4.G.1
  • 4.G.2
  • 4.G.3

• Measurement & Data

  • 4.MD.1
  • 4.MD.2
  • 4.MD.3
  • 4.MD.4
  • 4.MD.5
  • 4.MD.6
  • 4.MD.7

• Numbers & Operations: Base Ten

  • 4.NBT.1
  • 4.NBT.2
  • 4.NBT.3
  • 4.NBT.4
  • 4.NBT.5
  • 4.NBT.6

• Numbers & Operations: Fractions

  • 4.NF.1
  • 4.NF.2
  • 4.NF.3
  • 4.NF.3.a
  • 4.NF.3.b
  • 4.NF.3.d
  • 4.NF.4.a
  • 4.NF.4.b

• Operations & Algebraic Thinking

  • 4.OA.1
  • 4.OA.2
  • 4.OA.3
  • 4.OA.4
  • 4.OA.5

CCSS Math Standard: 4.OA.4

Gain familiarity with factors and multiples. Find all factor pairs for a whole number in the range 1-100. Recognize that a whole number is a multiple of each of its factors. Determine whether a given whole number in the range 1-100 is a multiple of a given one-digit number. Determine whether a given whole number in the range 1-100 is prime or composite.

Scrambled up somewhere in 161,000 is a first name. Can you find it!?

Let's use factors to encode and decode words.

Ready for a tricky counting and divisibility game?

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

Why are there 12 months? Why don't weeks fit into months evenly? Why don't weeks fit into the year evenly? What's going on with the calendar!