A high-quality problem book is the basis of solid knowledge from scratch.

• Collection of problems prepared by V.I. Lukashik and E.V. Ivanova, will guide schoolchildren through wonderful world physical discoveries and reveal the secrets of everyday phenomena. The material is presented in the form of cognitive tasks, the answers to which will give you the knowledge you need in life. In search of the right solutions, it is recommended to enlist the support of a resident. The online tutorial includes:
  - tasks varying degrees difficulties;
  - explanations and answers;
  - interpretation of physical processes.
  With such an assistant, studying physics becomes an exciting hobby that has every chance of becoming a future profession.
• This edition will be useful to all direct participants educational process... Teachers will be able to attract the attention of the wards with a variety of tasks that will become for schoolchildren guiding star to knowledge. Interesting is the fact that GDZ parents should take note of it, with such help it will not be difficult to remember school achievements and preparation for lessons will be more efficient and productive.
• GDZ physics can and should be used for self-study. With such an assistant, everything is on the shoulder. Deal with new topics, repeat what you have passed and practice, and the resident will become an excellent apprentice in this matter.

A high-quality problem book is the basis of solid knowledge from scratch

• Seventh-graders starting to study physics should initially tune in to scrupulous work. Since even the basic foundations of this science are distinguished by sufficient complexity and variety of material. To master the course for the seventh grade in full, to understand and remember, to learn how to apply the difficult laws of physics, you need high-quality practical training materials and answers to them. Self-study is an important component preparatory work in high school... Catching up on GDZ, seventh graders study:
  - plan and track the implementation of plans and commitments;
  - correctly and objectively assess your own level of knowledge in the discipline, determine what gaps exist and how to correctly eliminate them;
  - correctly record the results of your own work. This is where ready-made homework is especially helpful. On exams, VLOOKUP, diagnostic use of the correct record of the answer will allow you to get the maximum high score... Conversely, a correct, but not correct, incompletely recorded answer can lead to a loss of points.
• Find the right one educational material parents, tutors, subject teachers, course leaders can help, circle work... You can cope with such a task on your own, for example, focusing on the teaching materials, according to which the seventh grader is engaged in school. And - to pick up interesting things in the set for the basic textbook practical guide... First of all - a problem book, which presents tasks on all topics and sections studied in the textbook within the framework of physics in the seventh grade.
• Useful and interesting collections on physics for grade 7 include a collection of problems compiled by V.I.Lukashik. A variety of tasks and exercises, practice proven by years of schoolwork - these are the main advantages noted by experts who recommend this manual to seventh graders.
• The book is well systematized and illustrated, which allows you to clearly understand, disassemble even the most complex topics in physics in the seventh grade. Many graduates who have chosen this subject as an elective discipline for the OGE and USE also mark this problem book among the materials that allow them to successfully and quickly prepare for the final tests, check and improve their knowledge of physics.

Globally speaking, physics can be classified as a science about the world around us, about nature. She studies both the material and energy aspects of the universe, explains and logically justifies various phenomena occurring in nature. This science underlies the technological progress of society. And in order to fully and efficiently convey the basics of physics to schoolchildren of grades 7-9, well-known experts V.I. and Ivanova E.V. created a solution book for a physics textbook.

The main functions of the GDZ:

1.forming the child's analytical ability, through constant introspection of the accomplished homework and analysis of the identified errors;

2. helping students in the correct solution of experimental problems and problems with various unfinished answers, which help the child to express himself creatively;

3. self parsing seventh graders tasks to new topic from the paragraph;

4.quality preparation of schoolchildren for the upcoming class work and to any control of knowledge;

5. to consolidate the learned topic by solving repetition tasks;

6. excellent reference material for high school students who are preparing for exams and final testing;

7. give parents an opportunity to check the level of preparedness of their child and help him with homework;

8. additional material for teachers, which helps to develop a high-quality and detailed plan for a future lesson.

Collection GDZ in physics for grades 7-9 collection of problems Lukashik involves the study of material from the physics course for grades 7, 8 and 9. Therefore, the first section of the manual is referred to as INITIAL INFORMATION ABOUT PHYSICAL BODIES AND THEIR PROPERTIES. In it seventh graders will deal with the measurement physical quantities and learn about the structure of matter. Pupils solve all tasks according to the laws of motion of molecules and body temperature. The second section is devoted to the motion and interaction of bodies. Here, schoolchildren will learn about uniform and uneven straight motion, get acquainted with the concept of inertness of bodies. The tasks of finding the density of a substance will be solved. The topic of the phenomenon of gravity and the force of gravity is also touched upon. The authors of the eighth graders are introduced to Newton's laws. Also, schoolchildren will easily be able to graphically depict strength. The third section titled "Pressure solids, gases and liquids ”, will provide eighth-graders with formulas for solving problems of finding pressure. This section assumes a paragraph on the mobility of particles of liquids and gases. All problems from the textbook on Pascal's law will be solved. Tasks for communicating vessels will not be ignored either. And Archimedes' Law will cease to be an obstacle for students to good academic performance. Also, the features of pressure gauges and pumps will be consecrated here. The next section on work and power also involves studying simple mechanisms and energy. The authors will give all the formulas for finding work and power, explain the essence of levers and blocks, help calculate the efficiency of mechanisms and energy. Also included is a paragraph on the balance of bodies.

The fifth section talks about mechanical vibration and the wave. The sixth involves the analysis of thermal phenomena. All types of heat transfer are presented in it, formulas for measuring the amount of heat are given. The ninth graders will get acquainted with the concepts of melting and hardening. Also, schoolchildren will solve problems on evaporation and boiling. Heat engines and air humidity will not be ignored in the sixth section. The seventh section is completely devoted to electrical phenomena... There are many different formulas for students to remember, namely the formula for current strength, voltage and resistance. Schoolchildren in laboratory work can easily assemble an electrical circuit and calculate Ohm's Law problems. They learn everything about electromagnetic phenomena and the thermal effect of current.

The next section is about light phenomena, where exercises on the propagation of light, its display and refraction are discussed in detail. Ninth graders will learn about the flat mirror and get familiar with different lenses. And at the end of the physics course for the ninth grade, schoolchildren will have to go through a section on the structure of the atom and the atomic nucleus. It includes paragraphs about radioactive decay, about nuclear reactions and about elementary particles... Such material fully complies with the Federal State educational standards and recommended for students general education schools, to prepare for control works and to the Olympiads.

The school curriculum is getting harder and the homework takes longer. To better assimilate the material, it is worth using the GDZ in physics 7, 8, 9 class Lukashik.

The use of the Reshebnik is beneficial for students, parents, teachers:

• Students will be able to test themselves or write off the correct solutions. The guys will lose the fear that they have completed the tasks incorrectly. Schoolchildren will feel confident in their lessons.
• If fathers and mothers allow their children to visit the "Resator" website and use the solution book for Lukashik's 7-9 grade physics problem collection, then they will not have to spend family money to pay for tutoring services.
• Teachers should not worry that students will simply look at the right solutions on the Internet, and they will stop thinking about answers to difficult questions on their own. After all, students using the GDZ will avoid stress, will end up skipping classes because of not done homework... Consequently, academic performance and quality of knowledge will begin to grow.