Effectiveness of EdTech on Mathematics for K-12: Technology has proved to be effective for making students efficiently adept with Math. Out of several, there are three remarkable technologies, which in my opinion should be brought to the light. Computer-managed learning is a program that uses computers to assess student learning on Math and assign them with appropriate Math material, which they can work on to score and receive a chart of their progress for self-assessment; Comprehensive models such as Cognitive Tutor and I Can Learn use computer-aided instruction as well as non-computer activities for students to approach Math; Supplemental CAI technology consists of individualized computer-assisted instruction (CAI), to provide additional instruction at students’ assessed levels. Findings indicate that educational technology applications produce a positive effect on Mathematics achievement. For details, refer to the review on Mathematics/ Effectiveness of Technology .