How to teach division for grade three

Teacher introduced the lesson by involving the students by dividing 9 pieces of chocolate to 3 students she chose. First she began giving the students one piece for each one then she asked all the class (how much I still have) also she chose student that was not with her on the board to answer that she still had 6 pieces . Then she gave them another time one piece for the 3 students and ask (how much I still have) pick a student to answer that she still had 3 pieces. Then she asked the students another time: (can I give the 3 students same amount of chocolate pieces) she picked a   student to answer (that she can gave the students the same amount since she still has 3 pieces the same number as the students), then she do the same method by  giving each student one piece till she had no more pieces .Then she asked (how much every student have by dividing the 9 pieces) by choosing a student that raising his hand to answer that every student had 3 pieces. She tried to link new information (the division) to previous ones (the idea of distribution and the comparison between what are the numbers of the students and the number of the  chocolate pieces ). she did the same method another time by dividing 12 pieces of games to 4 students asking the same questions and finally the students pick up the conclusion that every student will have 3 pieces .now she asks do I need in every time I want to  divide the pieces of chocolate to divide one piece for the students then another turn the students answer no , then  she said lets know a scientific method to know how to divide she said that I want to divide 9 ÷3 =   .......     then I don’t  know how to divide lets see what I multiply by 3 give me 9 lets do another equation 3×  ........ =   9  she asked what is the number that I multiply by 3 give me 3 then she picked a student to answer 3times 3 give me 9 she gave him praise (good). then she asked the students to compare between the 2 equations then she asked what is the relation between multiplication and division, then the students can saw that the multiplication is the opposite of division then she wrote  9 ÷3 = 3 and make a sign that 3times 3 will give us 9 then she said that the relation between the multiplication and division is an opposite relation.So by discussion; she tried to foster the ability of students to acquire process of thinking by answering the questions and discover the relation between something they knew before to something they will master.