It’s a matter of age peculiarities. Separately, we should note that in a group such children also study very successfully, because teachers know how to find an approach to them. But it is much easier to be successful with one-on-one training. And here is why.
Preschoolers cannot concentrate for a long time. It is difficult for them to keep attention on one subject or activity for a long time. In a group you have to adjust to the others, and in one-on-one lessons the teacher adjusts to the child.
Children develop unevenly mentally and intellectually. Because of this, in group classes some grasp the material quickly and become bored, while others, on the contrary, need to go over old ground. In one-on-one lessons, the teacher adjusts to the child's pace, and this increases the effectiveness of learning.
Preschoolers get tired quickly. Knowing this peculiarity, the teacher plans the lesson so that the child is always interested and the activities alternate.
Preschoolers get easily distracted. It takes a sound outside the window to distract a preschooler from learning. The advantage of one-on-one tutoring is that the teacher will immediately notice it and correct it. For example, he or she will interest the child in a presentation or suggest that the child get a little exercise.
They can't always understand what they need to do. In a group the child can stop doing something because of this. But in individual lessons, the teacher won't let that happen. They will repeat the instruction using different words and everyone will be fine.
Preschoolers are inquisitive. Children love everything new, so in one-on-one lessons it is easier for the teacher to adjust to children's interests and answer questions, paying more attention to the most relevant topics.
Preschoolers have low self-control. It is difficult for children to stay focused and sit still. Therefore, the teacher’s role is to control different activities and games, ask questions, and alternate activities.
Preschoolers have involuntary attention and memory. Therefore, in a group class, children can get distracted and have trouble remembering the material. In an individual class, it is easier for the teacher to adjust to these characteristics and remove anything that distracts.
In one-on-one lessons, the teacher takes into account the goals, abilities, fears, personal qualities, and peculiarities of the child. Thanks to this, they make an individual lesson plan, select an approach to the child that will enable them to learn Russian or math more effectively.
When a child achieves success in individual lessons, they feel smart. There is self-confidence and motivation to move forward. This positive attitude will help the child in solving more difficult problems as well.