# Lessons [1–100 of 4331 lessons]

- Non-Standard Length Units
- Making New Figures
- Comparing Geometric Figures
- Plane Figures: Sides and Vertices
- Plane Figures
- Faces, Edges, and Vertices
- Solids
- Number Patterns
- Ordering Numbers
- Comparing Numbers
- Reading and Writing Numbers up to 1000
- Place Value up to 1000
- Hundreds, Tens, and Ones
- Hundreds
- Using Money
- Equal Amounts
- Counting Money
- Money (One Riyal, Two Riyals, Five Riyals, and Ten Riyals)
- One-Third and One-Fourth
- One-Half
- Congruent Parts
- Plane Figures
- Plane Figures and Solids
- Classifications of Solids: Roll, Stack, or Slide
- Solids
- Skip Counting: Twos, Fives, and Tens
- A Hundred Chart
- Counting by Tens
- Comparing and Ordering Capacities
- Comparing and Ordering Masses
- Non-Standard Units of Length
- Comparing and Ordering Lengths
- Ordering Numbers to 100
- Comparing Numbers to 100
- Estimating
- Numbers to 100
- Numbers to 50
- Tens and Ones
- Events and Probability
- Division by 8 and 9
- Division by 6 and 7
- Division by 3 and 4
- Division with 0 and by 1
- Division by 10
- Division by 5
- Division by 2
- The Relationship between Division and Multiplication
- The Relationship between Division and Subtraction
- Algebra: Associative Property
- Multiplication by 9
- Multiplication by 8
- Multiplication by 7
- Multiplication by 6
- Multiplication by 3
- Multiplication by 0 and 1
- Multiplication by 10
- Multiplication by 5
- Multiplication by 4
- Multiplication by 2
- Arrays and Multiplication
- Fractions as a Part of a Set
- Comparing Fractions
- Fractions Equal to 1
- Other Fractions
- Unit Fractions
- Time to Five-Minute Intervals
- Time to the Quarter Hour
- Estimating Time
- Time to the Half Hour
- Time to the Hour
- Money: SR 100
- Counting Money
- Money: SR 5, SR 10, and SR 50
- Estimating Differences
- Verifying the Correctness of the Result of Subtraction
- Subtracting Two Two-Digit Numbers
- Subtracting One-Digit Numbers from Two-Digit Numbers
- Subtraction by Renaming
- Subtraction without Renaming
- Counting Back to Subtract
- Subtracting Tens
- Adding Three 2-Digit Numbers
- Adding by Renaming
- Adding 2-Digit Numbers to 1- or 2-Digit Numbers
- Counting on to Add
- Adding Tens
- Using a Number Line to Subtract
- Counting Descendingly to Subtract
- Using a Number Line to Add
- Counting Ascendingly to Add
- Vertical Subtraction
- Subtracting from 10, 11, and 12
- Subtracting from 7, 8, and 9
- Subtracting from 4, 5, and 6
- Subtracting Zero and All
- Subtraction Sentences
- Modeling Subtraction
- Subtraction Stories
- Vertical Addition
- Ways to Make 10, 11, and 12