MAT-051 · Modern Arithmetic I

The CLAA's MAT-051 Modern Arithmetic I course introduces students to the fundamentals of arithmetic appropriate for grades 2-4. This course covers basic concepts such as addition, subtraction, multiplication, and division, along with number recognition and counting. Through simple exercises and practical examples, students develop essential numerical skills and confidence in handling basic arithmetic operations. Ideal for young learners, this course provides the foundation for a lifetime of mathematical learning.

Enrollment opens for the coming school year.

Lessons

MAT-051 Lesson 01 - Counting Things
MAT-051 Lesson 02 - The Figures: Writing One to Ten
MAT-051 Lesson 03 - Numbers to Twenty
MAT-051 Lesson 04 - Counting to One Hundred
MAT-051 Lesson 05 - Reading and Writing Numbers to One Hundred
MAT-051 Lesson 06 - Numbers to One Thousand
MAT-051 Lesson 07 - Reading and Writing Numbers to One Thousand
MAT-051 Lesson 08 - Roman Numerals to Twelve: Reading the Clock Face
MAT-051 Lesson 09 - About How Many: Making a Good Guess
MAT-051 Lesson 10 - What Addition Is
MAT-051 Lesson 11 - The Addition Table: Adding One and Two
MAT-051 Lesson 12 - The Addition Table: Adding Three and Four
MAT-051 Lesson 13 - The Addition Table: Adding Five and Six
MAT-051 Lesson 14 - The Addition Table: Adding Seven, Eight, and Nine
MAT-051 Lesson 15 - Adding in the Head: Three or More Small Numbers
MAT-051 Lesson 16 - Writing Addition Down
MAT-051 Lesson 17 - Adding Larger Numbers on Paper
MAT-051 Lesson 18 - What Subtraction Is
MAT-051 Lesson 19 - The Subtraction Table: Taking Away One and Two
MAT-051 Lesson 20 - The Subtraction Table: Taking Away Three and Four
MAT-051 Lesson 21 - The Subtraction Table: Taking Away Five and Six
MAT-051 Lesson 22 - The Subtraction Table: Taking Away Seven, Eight, and Nine
MAT-051 Lesson 23 - Writing Subtraction Down
MAT-051 Lesson 24 - Taking Away with Borrowing
MAT-051 Lesson 25 - How Addition and Subtraction Undo Each Other
MAT-051 Lesson 26 - Addition and Subtraction Together
MAT-051 Lesson 27 - What Multiplication Is
MAT-051 Lesson 28 - The Table of Twos
MAT-051 Lesson 29 - The Table of Threes
MAT-051 Lesson 30 - The Table of Fours
MAT-051 Lesson 31 - The Table of Fives and Tens
MAT-051 Lesson 32 - The Table of Sixes
MAT-051 Lesson 33 - The Table of Sevens
MAT-051 Lesson 34 - The Table of Eights
MAT-051 Lesson 35 - The Table of Nines
MAT-051 Lesson 36 - Writing Multiplication Down
MAT-051 Lesson 37 - What Division Is: Equal Sharing
MAT-051 Lesson 38 - The Division Table from the Twos and Threes
MAT-051 Lesson 39 - The Division Table from the Fours and Fives
MAT-051 Lesson 40 - The Division Table from the Sixes and Sevens
MAT-051 Lesson 41 - The Division Table from the Eights, Nines, and Tens
MAT-051 Lesson 42 - Something Left Over: Remainders
MAT-051 Lesson 43 - Writing Division Down
MAT-051 Lesson 44 - How Multiplication and Division Undo Each Other
MAT-051 Lesson 45 - Cents, Nickels, and Dimes
MAT-051 Lesson 46 - Quarters and the Dollar
MAT-051 Lesson 47 - Making Change
MAT-051 Lesson 48 - The Clock: Hours and Half Hours
MAT-051 Lesson 49 - The Clock: Minutes
MAT-051 Lesson 50 - The Calendar: Days, Weeks, and Months
MAT-051 Lesson 51 - The Ruler: Inches, Feet, and the Yard
MAT-051 Lesson 52 - The Pound: Weighing Things
MAT-051 Lesson 53 - The Quart: Measuring What Pours
MAT-051 Lesson 54 - Measuring the Metric Way: The Centimeter, the Meter, and the Liter
MAT-051 Lesson 55 - Keeping Count: Tally Marks and Picture Graphs
MAT-051 Lesson 56 - Halves: One Thing Made Into Two Equal Parts
MAT-051 Lesson 57 - Quarters: Half of a Half
MAT-051 Lesson 58 - Thirds
MAT-051 Lesson 59 - Finding Half or a Quarter of a Number
MAT-051 Lesson 60 - Arithmetic in the Head: Adding and Taking Away
MAT-051 Lesson 61 - Arithmetic in the Head: Multiplying and Dividing
MAT-051 Lesson 62 - Arithmetic in the Head: Money, Measures, and Parts of Things
MAT-051 Lesson 63 - The Completion of Modern Arithmetic I