Read the introduction carefully. Re-understand the meaning of terms and like terms in algebra. Terms: parts of an algebraic expression separated by a + or – sign. Like terms: terms that have the same variable and exponent. Observe examples of simplifying algebraic expressions. Try simple exercises, starting with grouping like terms and simplifying algebraic expressions. Discuss your work with your classmates/group. If you encounter difficulties, ask your teacher or write down your questions to discuss together.