Lesson: Arithmetic Series Mathematics • Second Year of Secondary School

Students will be able to

• recognize the formula for the sum of an arithmetic sequence in terms of the first and last terms,
• recognize the formula for the sum of an arithmetic sequence in terms of its first term and common difference,
• find the sum of arithmetic sequences with a given number of terms, including a given range of terms, and examples where you know the first and last terms, and the first term and the common difference (or have the information to calculate these),
• solve applied problems, including finding the number of terms given the sum and other necessary information.