Technology in K-12 Mathematics Classrooms.The article focuses on the effects on educational technologies used in K-12 mathematics instruction and their effects on the teaching process and student learning. The article discusses various technologies and their effects such as calculators, interactive whiteboard, immediate response devices, computers, and web-based applications. The article discusses the implications of these educational tools such as its positive effects with regards to its effective use. The article concludes that the use of these technologies aid in student attitudes towards mathematics and their subsequent achievement with the subject.