Provide enough wait-time for students to reflect when responding to inquiries. Provide emotionally supportive environments in the classroom encouraging reevaluation of conclusions. Prompt reviews of the learning situation, what is known, what is not yet known, and what has been learned.
Polyurethane is a fully reacted polymer in which every molecule bonds with another so it is chemically inert, which keeps it from oxidizing or leaching chemicals, theoretically extending tire life. Tires of the future?
Quick Answer. Polyurethane, or PU, coated leather is split hide leather that is bonded and covered with a polyurethane coat, and then embossed with grain patterns to simulate the appearance of top grain leather. PU is also known as bicast leather and split hide leather. Continue Reading.