Grade 1
  1. Numbers and Counting  1.1. Counting to 10  1.2. Counting to 20  1.3. Counting to 50  1.4. Counting to 100  1.5. Writing Numbers 1 to 10  1.6. Writing Numbers 1 to 20  1.7. Writing Numbers 1 to 50  1.8. Writing Numbers 1 to 100  1.9. Reading Numbers 1 to 10  1.10. Reading Numbers 1 to 20  1.11. Reading Numbers 1 to 50  1.12. Reading Numbers 1 to 100  1.13. Comparing Numbers  1.14. Ordering Numbers  1.15. Odd and Even Numbers  1.16. Number Patterns  1.17. Skip Counting by 2s, 5s, and 10s  1.18. Understanding Zero
  2. Basic Addition and Subtraction  2.1. Understanding Addition  2.2. Addition Facts within 10  2.3. Addition Facts within 20  2.4. Adding Zero  2.5. Adding One More  2.6. Adding Two More  2.7. Adding Three More  2.8. Adding Using Pictures  2.9. Addition Word Problems  2.10. Understanding Subtraction  2.11. Subtraction Facts within 10  2.12. Subtraction Facts within 20  2.13. Subtracting Zero  2.14. Subtracting One  2.15. Subtracting Two  2.16. Subtraction Using Pictures  2.17. Subtraction Word Problems  2.18. Introduction to Doubles Facts  2.19. Introduction to Making 10
  3. Place Value and Number Sense  3.1. Understanding Tens and Ones  3.2. Counting by Tens  3.3. Place Value within 20  3.4. Place Value within 50  3.5. Place Value within 100  3.6. Reading and Writing Two-Digit Numbers  3.7. Comparing Two-Digit Numbers  3.8. Decomposing Numbers
  4. Measurement  4.1. Length  4.1.1. Comparing Lengths  4.1.2. Measuring with Non-Standard Units  4.1.3. Using Standard Units (Inches and Centimeters) in Length  4.2. Weight  4.2.1. Comparing Weights  4.2.2. Heavy and Light Objects  4.2.3. Introduction to Grams and Pounds  4.3. Capacity  4.3.1. Comparing Capacity  4.3.2. Full and Empty  4.3.3. Introduction to Liters and Milliliters  4.4. Time  4.4.1. Telling Time to the Hour  4.4.2. Telling Time to the Half Hour  4.4.3. Days of the Week  4.4.4. Months of the Year  4.4.5. Understanding Yesterday, Today, and Tomorrow  4.5. Money  4.5.1. Recognizing Coins  4.5.2. Counting Coins  4.5.3. Introduction to Dollar and Cents Symbols  4.5.4. Simple Addition and Subtraction with Money
  5. Geometry  5.1. 2D Shapes  5.1.1. Recognizing 2D Shapes  5.1.2. Drawing 2D Shapes  5.1.3. Naming 2D Shapes  5.1.4. Properties of 2D Shapes  5.1.5. Sorting 2D Shapes  5.1.6. Composing Simple Shapes  5.2. 3D Shapes  5.2.1. Recognizing 3D Shapes  5.2.2. Naming 3D Shapes  5.2.3. Properties of 3D Shapes  5.2.4. Sorting 3D Shapes  5.3. Position and Direction  5.3.1. Left and Right  5.3.2. Above and Below  5.3.3. Inside and Outside  5.3.4. Near and Far  5.3.5. In Front and Behind
  6. Patterns and Sorting  6.1. Recognizing Patterns  6.2. Extending Patterns  6.3. Creating Patterns  6.4. Sorting by Color  6.5. Sorting by Shape  6.6. Sorting by Size
  7. Data and Graphing  7.1. Introduction to Data  7.2. Collecting Data  7.3. Tally Marks  7.4. Bar Graphs  7.5. Picture Graphs  7.6. Interpreting Simple Graphs
  8. Fractions  8.1. Understanding Halves  8.2. Understanding Fourths  8.3. Dividing Shapes into Equal Parts  8.4. Identifying Equal and Unequal Parts

Grade 1 → Numbers and Counting ↓


Reading Numbers 1 to 100


Learning to read numbers from 1 to 100 is an essential skill in the math curriculum for grade 1 students. This skill forms the basis for mathematical operations such as addition, subtraction, multiplication, and division. Learning to count and identify numbers also aids in the understanding of patterns, sequences, and spatial understanding. In this lesson, we will explore each number from 1 to 100, discuss their significance, and provide visual examples to help students understand better.

Counting from 1 to 10

Let's start with the basic numbers from 1 to 10. Each number is unique and it is important to recognize them in numerical and word form.

1 = One, 2 = Two, 3 = Three, 4 = Four, 5 = Five
6 = Six, 7 = Seven, 8 = Eight, 9 = Nine, 10 = Ten
1 2 3

Each number represents a certain amount or position in the sequence. When counting objects, make sure to match each object to a number to understand the quantity.

Understanding numbers from 11 to 20

After you have mastered the numbers 1 to 10, you can move on to numbers 11 to 20. These numbers are a little more complicated as they introduce the concept of tens and ones.

11 = Eleven, 12 = Twelve, 13 = Thirteen, 14 = Fourteen, 15 = Fifteen
16 = Sixteen, 17 = Seventeen, 18 = Eighteen, 19 = Nineteen, 20 = Twenty
11 12

To strengthen understanding, practice counting objects from 11 to 20. Arrange the objects in groups of ten and add additional single objects as needed. This helps to understand the meaning of 'ten and some more'.

Counting in tens: 10 to 100

Counting by tens is an effective way to learn about larger numbers. It involves jumping from one ten to the next - such as starting at ten and going up to twenty.

10, 20, 30, 40, 50, 60, 70, 80, 90, 100
10 20 30 40 50 60 70 80 90 100

This technique provides a strong foundation for learning more advanced math, while also improving memory through repetition and patterns.

Counting from 21 to 99

Numbers from 21 to 99 require an understanding of combining tens and ones. Here, you don't just have to move beyond the tens, you have to add smaller numbers within the larger tens.

21 = Twenty-one, 22 = Twenty-two, ...
34 67 89

These numbers are usually taught by counting objects, number strips, and practicing various combinations.

Zero: Starting point

We must also remember the importance of zero. Zero represents the absence of things and this is very important when discussing numbers beyond ten.

0

It plays an important role in understanding the numbers in tens and hundreds, and acts as a supplement in places where there is no unit.

Sequence number

Sequencing helps children understand the order and place value of numbers and how each number follows another. Activities like filling in the missing numbers in a series reinforce this concept.

Example: 12, 13, __, 15, __, 17
14 16

It trains the brain to think logically and understand numerical progressions.

Visual representation of numbers

Visual aids help reinforce learning and make abstract ideas concrete. Representation through number lines, objects, and shapes makes numbers more relevant.

0 100

Incorporating many visual examples into lessons helps students better connect numbers with their actual value.

Conclusion

By exploring numbers from 1 to 100 through reading, counting, and visualizing, students build a strong foundation in math. Rich in text and visual examples, this guide makes understanding easier for young learners and sets the stage for future success in math.


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Reading Numbers 1 to 100

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