benang biru user.......
https://teacher.desmos.com/activitybuilder/teacherguide/6043c4771b58f241bd551029?lang=en
https://teacher.desmos.com/activitybuilder/teacherguide/6043c938e931d9093ea05114?lang=en
https://teacher.desmos.com/activitybuilder/teacherguide/6043c98bdc71673ebfee0ffa?lang=en
https://teacher.desmos.com/activitybuilder/teacherguide/6043c9be61acbf05f58630e2?lang=en
https://teacher.desmos.com/activitybuilder/teacherguide/6043c9e782324504380e9933?lang=en
https://teacher.desmos.com/activitybuilder/teacherguide/6043ca0fea27ea0d603bf8ea?lang=en
https://teacher.desmos.com/activitybuilder/teacherguide/6043ca3238b7683da50c33a7?lang=en
https://teacher.desmos.com/activitybuilder/teacherguide/6043ca5882324504380e9952?lang=en
https://teacher.desmos.com/activitybuilder/teacherguide/6043ca7e6054e30d62c0b9b5?lang=en
https://teacher.desmos.com/activitybuilder/teacherguide/6043cabb1b58f241bd551214?lang=en