Blogs can be used as an effective educational tool in several ways: 1) Blogs allow students to write, reflect, and collaborate, while also engaging different learning styles. 2) Teachers can use blogs to communicate with students, provide feedback, and monitor student performance. 3) Blogs enable classroom extension beyond physical boundaries by allowing students to work anywhere with internet access. 4) Common ways blogs are used in classrooms include for classroom management, collaboration, discussion, and hosting student portfolios.