Grade 3 (3rd grade) curriculum

These are the 22 grade-level skills CubbyEd teaches in 3rd grade: Math, English Language Arts, History, Latin, Catholic Religion. Each one gets lessons, practice and mastery checks. Parents and teachers choose the subjects and track progress.

Math

• Unit fractions
  Recognize 1/b as one part of b equal parts of a whole.
  Why it matters: First step into fraction reasoning.
  Fractions · Standards: 3.NF.A.1
• Fractions on a number line
  Place fractions like 1/4, 2/3 on a number line.
  Why it matters: Connects fractions to magnitude.
  Fractions · Standards: 3.NF.A.2
• Area by unit squares
  Find area by counting unit squares.
  Why it matters: Conceptual base before formulas.
  Geometry · Standards: 3.MD.C.5
• Perimeter of polygons
  Sum side lengths to find perimeter.
  Why it matters: Distinguished from area.
  Geometry · Standards: 3.MD.D.8
• Measure mass and volume
  Use grams, kilograms, liters in word problems.
  Why it matters: Science vocabulary.
  Measurement · Standards: 3.MD.A.2
• Multiplication facts to 10
  Recall products of single-digit numbers fluently.
  Why it matters: Fluency unlocks all later math.
  Operations · Standards: 3.OA.C.7
• Basic division
  Divide within 100 as the inverse of multiplication.
  Why it matters: Required for fractions and ratios.
  Operations · Standards: 3.OA.C.7

English Language Arts

• Adverbs and prepositions
  Identify adverbs and prepositional phrases.
  Why it matters: Sentence complexity.
  Grammar · Standards: L.3.1a
• Subject-verb agreement
  Match singular subjects with singular verbs.
  Why it matters: Universal grammar test point.
  Grammar · Standards: L.3.1f
• Commas in compound sentences
  Use commas with coordinating conjunctions.
  Why it matters: Sentence structure.
  Punctuation · Standards: L.3.2c
• Main idea and details
  Identify a passage's main idea and supporting details.
  Why it matters: Foundation of comprehension.
  Reading · Standards: RI.3.2

History

• American founders
  Washington, Adams, Jefferson, Franklin.
  Why it matters: Civic foundation.
  American · Standards: D2.His.1.3-5, D2.Civ.3.3-5

Latin

• Latin alphabet and pronunciation
  Pronounce Latin letters; macrons.
  Why it matters: Door to all Latin study.
  Vocabulary · Strand
• Latin numbers I-X
  Roman numerals and number words.
  Why it matters: Daily encounters with Roman numerals.
  Vocabulary · Strand

Catholic Religion (optional, for Catholic schools and families)

• Creed (G3)
  Who God is and what we believe at the grade3 level.
  Why it matters: Faith seeks understanding of the living God.
  Creed · Standards: CCC, USCCB
• Liturgical Life (G3)
  The Church year and worship at the grade3 level.
  Why it matters: The liturgy makes present the mystery of Christ.
  Liturgical Life · Standards: CCC, USCCB
• Moral Life (G3)
  Freedom, virtue, and the commandments of love at the grade3 level.
  Why it matters: Discipleship is lived in daily moral choices.
  Moral Life · Standards: CCC, USCCB
• Prayer (G3)
  How we speak and listen to God at the grade3 level.
  Why it matters: Prayer is the living relationship with God.
  Prayer · Standards: CCC, USCCB
• Sacraments (G3)
  How Christ acts through the sacraments at the grade3 level.
  Why it matters: Sacraments are encounters with Christ, not empty rituals.
  Sacraments · Standards: CCC, USCCB
• Sacred Scripture (G3)
  How God speaks in the Bible at the grade3 level.
  Why it matters: Scripture is the soul of theology and catechesis.
  Sacred Scripture · Standards: CCC, USCCB
• Saints & Mary (G3)
  Models of holiness and communion of saints at the grade3 level.
  Why it matters: The saints show holiness is possible.
  Saints & Mary · Standards: CCC, USCCB
• The Church (G3)
  People of God, Body of Christ, mission at the grade3 level.
  Why it matters: No one is a Christian alone.
  The Church · Standards: CCC, USCCB

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Reading list: see the CubbyEd great books library.