Mathematics 🔢
Counting, Addition, Subtraction, Shapes & Patterns
What We'll Learn
1. Counting 1 to 100
Counting 1 to 10
Counting by Tens
Tip: Count your fingers! Each hand has 5 fingers. Two hands = 10 fingers!
Number Words
- 1 = one
- 2 = two
- 3 = three
- 4 = four
- 5 = five
- 6 = six
- 7 = seven
- 8 = eight
- 9 = nine
- 10 = ten
2. Number Recognition
Place Value
A two-digit number has TENS and ONES.
25 = 2 tens + 5 ones = 20 + 5
Comparing Numbers
5 is greater than 3
2 is less than 7
4 is equal to 4
Remember: The "mouth" of > and < always eats the bigger number!
3. Basic Addition (+)
What is Addition?
Addition means putting together or combining numbers. The answer is called the SUM.
2 + 3 = 5 apples
Addition Facts (1 to 10)
1 + 1 = 2
2 + 2 = 4
3 + 3 = 6
4 + 4 = 8
5 + 5 = 10
2 + 3 = 5
4 + 5 = 9
3 + 7 = 10
Tip: Use your fingers to count! Start with the first number, then count up with your fingers for the second number.
4. Basic Subtraction (−)
What is Subtraction?
Subtraction means taking away or removing from a number. The answer is called the DIFFERENCE.
5 − 2 = 3 apples left
Subtraction Facts (1 to 10)
5 − 2 = 3
7 − 4 = 3
10 − 5 = 5
8 − 3 = 5
6 − 2 = 4
9 − 6 = 3
10 − 7 = 3
4 − 4 = 0
Remember: When we subtract a number from itself, the answer is always 0!
Example: 5 − 5 = 0
5. Shapes
Basic 2D Shapes
Circle
0 corners, 0 sides
Square
4 corners, 4 equal sides
Rectangle
4 corners, 4 sides
Triangle
3 corners, 3 sides
Shapes Around Us
| Shape | Things That Look Like It |
|---|---|
| Circle | Ball, Clock, Coin, Pizza |
| Square | Tile, Window, Sandwich |
| Rectangle | Door, Book, Phone, TV |
| Triangle | Roof, Pizza slice, Yield sign |
6. Patterns
What is a Pattern?
A pattern is something that repeats in a special order.
Color Patterns
AB Pattern:
ABC Pattern:
Number Patterns
Count by 1s: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
Count by 2s: 2, 4, 6, 8, 10, 12, 14
Count by 5s: 5, 10, 15, 20, 25, 30
Count by 10s: 10, 20, 30, 40, 50, 60
What comes next?
🟢 🔵 🟢 🔵 🟢 ___
Answer: 🔵 (The pattern is green, blue, green, blue...)
What We Learned!
- ★Count from 1 to 100
- ★Two-digit numbers have Tens and Ones
- ★Addition (+) means putting together
- ★Subtraction (−) means taking away
- ★Circle, Square, Rectangle, Triangle
- ★Patterns repeat in order