수열 만들기 https://drive.google.com/file/d/1WeG8ibi_SDtbguMwQFRI4pA1LDTWBq0B/view?usp=sharing 사각형 넓이 구하기 https://drive.google.com/file/d/10EwUdR9ks3zpDJp98PJegbBa5mrLeVPu/view?usp=sharing 문제 바르게 풀기 https://drive.google.com/file/d/1vLdpaYC3qyWKzxkoTHWAUU5jmKbn701I/view?usp=sharing 문제 변형해서 풀기 https://drive.google.com/file/d/1r2PK-e7Jz5r47-Sch4htpf6yfmpKoerA/view?usp=drive_link 2가지 방법으로 풀기 https://drive.google.com/file/d/1LGRqKk_krKLjzdIbhoCVBXWBtHmtdhVh/view?usp=drive_link 전송