Question

how experimental method useful to teacher​

Answer 1

Answer:

The experimentation is essential for science teaching because it allows the practical activities to integrate teacher and students, to provide a joint planning (in which teacher and student construct the process of the activity) and the use of teaching techniques that can lead to a better understanding of the science ...

Explanation:

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Answer 2

$\bold{\color{lime}{Experiments\: in\: the \:Laboratory:-}}$

In psychological experiments (like experiments in other fields) we try to keep all aspects of the situation constant except one - the one we are looking at. For example, suppose we want to investigate which of two methods is more successful at teaching children to read. The aspect that we vary is called the independent variable (IV) and we change this in a very precise way. In this example the teaching method is the independent variable. We call the factor which we then measure, in our example it would be some measure of the childrens reading ability, the dependent variable (DV), because, if our ideas are correct, it depends on the independent variable. In our example, the childrens reading ability depends on the teaching method used.

$\bold{\color{green}{Variable\: in\: the \:Laboratory:-}}$

The variable which is being manipulated by the researcher is therefore called the independent variable and the dependent variable is the change in behaviour measured by the researcher.

All other variables which might affect the results and therefore give us a false set of results are called confounding variables (also referred to as random variables). Examples of confounding variables in the example given might include the following

$\bold{\color{red}{Differences\: in\: the \:Laboratory:-}}$

· Differences in the instructions given by an experimenter or in the stimulus materials being used (which could be overcome by standardising instructions and materials foe all those taking part)

· Differences between participants, e.g. in their age (which could be eliminated as a variable by using a single age group, or alternatively it could be made more constant by ensuring that the age structure of each of the groups taking part in the experiment is very similar).

$\bold{\color{blue}{Changing\: in\: the \:Laboratory:-}}$

By changing one variable (the IV) while measuring another (the DV) while we control all others, as far as possible, then the experimental method allows us to draw conclusions with far more certainty than any non-experimental method. If the IV is the only thing that is changed then it must be responsible for any change in the dependent variable.