Carlos is conducting an investigation in which he changes one variable and measures how it affects another. he also has one group that does not receive the factor being tested. what type of investigation is carlos conducting?

Carlos is conducting a controlled experiment. A controlled experiment is a scientific test where only one variable is changed and there is a group of subjects (named the control group) that is not receiving the factor that is being tested. The group of subjects receiving a treatment or the factor which is being tested is called the experimental group. The variable which is different between the control and the experimental group is the independent variable. The dependent variable depends on the independent variable and represents the response that we observe as an outcome of our experiment.

Schools are being forced to embrace computers. unlike their "digital immigrant" teachers, these students are "digital natives", born into a world where technology is an integral part of everyday life. almost every student has access to a multitude of computers, laptops and tablet devices. it would be crazy to assume an assignment would  notbe written on computer in this day and age.many schools now have a 1-to-1 computer policy, and many districts and states in the united states have mandated computers or ipads across the state for every student,  including los angeles, the second largest school district in the country.but the thing is, when they tried it in la, it wasn't the success they hoped for. that's because the tablets weren't used as much as they expected. rather, it appeared there was a gap between the digital native's love of technology and their use of it in the classroom.this conflicted relationship with computers is also underscored by much of the literature on education. it is also highlighted in professional development and conferences such as  edutech.