1. **Stating the problem:** We will explore factors and multiples, which are important concepts in math for class 4 students. 2. **Definition of factors:** A factor of a number is a number that divides it exactly without leaving a remainder. 3. **Definition of multiples:** A multiple of a number is the product of that number and any integer. 4. **Example of factors:** Factors of 12 are numbers that divide 12 exactly: 1, 2, 3, 4, 6, 12. 5. **Example of multiples:** Multiples of 5 are 5, 10, 15, 20, 25, ... (5 times 1, 2, 3, 4, 5, ...). 6. **Worksheet problems:** a. Find all factors of 18. b. List the first 5 multiples of 7. c. Check if 4 is a factor of 24. d. Find the common factors of 12 and 16. e. Find the least common multiple (LCM) of 3 and 4. 7. **Solutions:** a. Factors of 18: 1, 2, 3, 6, 9, 18. b. First 5 multiples of 7: 7, 14, 21, 28, 35. c. 24 ÷ 4 = 6 (no remainder), so 4 is a factor of 24. d. Factors of 12: 1, 2, 3, 4, 6, 12; Factors of 16: 1, 2, 4, 8, 16; Common factors: 1, 2, 4. e. Multiples of 3: 3, 6, 9, 12, 15; Multiples of 4: 4, 8, 12, 16, 20; LCM is 12 (smallest common multiple). This worksheet helps students understand and practice factors and multiples clearly.