An interdisciplinary connection in the school learning process is a necessary condition for successful teaching. Properly executed drawing of geometric shapes according to the rules of rectangular projection is one of the solutions of mathematical problems in geometry. Such ways of construction as the replacement of the projection planes, rotation and alignment demonstrate finding out of an actual size of a segment and a plane.

Injuries among domestic animals account for 50-70 % of all non-communicable diseases. Fractures of bones, mainly limbs, occur in 44.5 % of cases. The main goal of fracture treatment is to restore normal function and movement of the limb, and the ways in which this is done are varied. Preference is given to methods that do not constrain the movement of the limb, allowing the animal to use it during the treatment period. Purpose: This article discusses the method of bone osteosynthesis, which has proven itself in the treatment of bone fractures, and is relevant today in veterinary medicine. The main study was conducted on the basis of the veterinary clinic "Shans" in Pavlodar. For osteosynthesis, plates for osteosynthesis and screws made of titanium alloy were used. This is due to the fact that when in contact with each other, the metal that fixes bone fragments can oxidize. Animals come to the clinic as a result of injuries that lead to fractures. The most common causes include falls from a height, motor vehicles, careless or rough handling of animals, and contact with other animals. When a fracture is established by obvious signs or if a fracture is suspected, such patients are preliminarily sent for x-rays. Upon receipt of an X-ray image and with the consent of the owner of the animal, osteosynthesis is performed. When accessing bone fragments, the incision was made along the muscle fibers. Osteosynthesis was performed according to the method described by V.M. Shapovalov (2009). The general condition of the animals after osteosynthesis was restored after 3-5 days. All animals, after bone osteosynthesis, completely relied on the limb. Contractures of adjacent joints and muscle atrophy were not determined. Plain osteosynthesis of the femur, in the presence of the necessary instrument and consumables, is not very difficult to perform. Performing bone osteosynthesis in the early stages makes it possible to include the limb in the locomotory act, as a result of which the animal actively uses the limb during the rehabilitation period.