Timsik and his friends. 4th grade. Training tasks in mathematics and natural science

You picked up an amazing book. Traveling along its pages along with Timsik and his friends, you will open up new opportunities for knowing mathematics and natural sciences: the heroes will help you not only repeat the material studied, but also reveal the ability to reasoning, logical conclusions, and metabolic links.
The book presents test tasks with a choice and a freely constructed answer. The format of tasks is visualized: tasks and questions are accompanied by drawings and tables, diagrams and schemes.
The manual is intended for teachers students of 4 grades and their parents. It will help to understand the features of the TIMSS international research in assessing the educational achievements of students, will allow teachers to improve teaching technologies