Final answer:
The correct answer is option (a) manipulative aids. Manipulative aids are physical objects that students can manipulate or interact with to understand concepts better.
Step-by-step explanation:
The correct answer is option (a) manipulative aids. Manipulative aids are physical objects that students can manipulate or interact with to understand concepts better. Examples of manipulative aids include blocks, counting cubes, or fraction bars.
On the other hand, options (b) slideshows, (c) DVD's, and (d) audio clips are all examples of technological aids. Slideshows can be created using presentation software like PowerPoint, DVD's allow for video playback, and audio clips provide auditory information.
Therefore, the only option that is not an example of a technological aid is manipulative aids (option a).
Learn more about Technological aids