The document outlines lesson 2 of a mathematics course focused on algebraic expressions and polynomials for Grade 7. It defines key concepts such as constants, variables, numerical expressions, and algebraic expressions, providing examples for clarity. The lesson also emphasizes the differentiation of related terms in algebra to enhance student understanding.

1. z
ALGEBRAIC
EXPRESSIONS
Quarter 2_Week 3_Mathematics 7
Lesson 2:
Algebraic Expression and Polynomials

2. z
Most Essential Learning Competencies
 Illustrates and differentiates related terms in algebra:
 a. 𝑎𝑛
where n is a positive integer
 b. Constant and variables
 c. Literal coefficients and numerical coefficients
 d. Algebraic expressions, terms and polynomials
 e. Number of terms, degree of the term and degree of the
polynomials
 (M7AL-IIc-2)(M7AL-IIc-3)

3. Definitions:
Constant
 Any number is a constant such as 3, 5,8,15 and 27.
 Any symbol that has a fixed value is a constant such as 𝜋 ,since its
value is approximately 3.1416.
Variable
 Any letter is a variable such as 𝑥, 𝑦, 𝑧, 𝑎, 𝑏, 𝑐, 𝑛.
 Any symbol that used to represent an unknown number such as
, _____.
Note: Variable is used to represents the unknown number.

4. Definitions:
Numerical Expression
A numerical expression is a mathematical phrase that uses
numerals and operation symbols.
Example: 4 + 8 , 5 × 11 , 6 ÷ 3
Algebraic Expression
An Algebraic expression is a mathematical phrase that uses
variables, numerals and operation symbols.
Examples: 5 + 𝑁 , 8𝑥 ,
𝑦
2

8. Your Turn

9. Answer Key

13. Your Turn

14. Answer Key

16. Your Turn

17. Answer Key

19. Your Turn

20. Answer Key
P
P
P
P
P
NP
NP
NP
NP
NP

27. Your Turn

28. Answer Key

29. Prepared by:
MARY ANN L. GUERRERO
Teacher III
HCPSMSHS
Cabanatuan City