The document discusses the use of educational technology at different levels of the author's education. In preschool, the chalkboard and visual aids like pictures and flashcards helped facilitate learning. In elementary school, the chalkboard and visual aids such as pictures, models, and maps helped the author understand concepts. In high school, the whiteboard and overhead projector combined with visual aids improved the author's learning. In college, the blackboard and LCD projector along with visual models and mock-ups created a more engaging learning experience. The author realized that educational technology with a teacher's guidance made learning more effective, easy to understand, and interactive.