Barney was giving a speech on animal-borne diseases. when discussing each disease, his slides contained a definition, symptoms, risks, treatment and ways to prevent the disease. was this an effective strategy?

When Barney was giving his speech and discussing each slide he was only giving definitions, symptoms, risks associated with the animal-borne diseases and treatment. This was not an effective strategy for Barney or for his class/listeners. Barney should have given pictures along with the slides so that everyone could see what the diseases looked like. Pictures also help people to have a better understanding of what they are learning/hearing.