The pilot-in-command (PIC) in the back seat reported that the flight was conducted to familiarize the student pilot, in the front seat, with the private airstrip and surrounding obstacles. The airplane touched down "a little" long and bounced. The student pilot aborted the landing and initiated a "max performance" climb. The PIC reported that he had briefed the student pilot as to the obstacles around the departure end of the runway, but the PIC was unable to actually see the obstacles from the rear seat during climb out. The airplane's left wing collided with a tree that was left of the runway centerline. The right wing also struck a tree before the airplane impacted the ground in a nose down attitude. The airplane sustained damage to the engine mount, fuselage and both wings. The PIC reported there were no anomalies with the airplane.