Montessori Decimal System Math Practice Set - Learning Numbers Type: Numbers Type: Puzzle Type: Numbers Popular Keywords: Montessori This is a teaching material I bought for 3980 yen. It's in good condition with little use, but everything is as shown in the photos. Please check the photos. 1 cube 10 x 10 x 10 mm 10 rod 10 x 10 x 100 mm 100 plate 100 x 100 x 10 mm 1000 cube 100 x 100 x 100 mm Lines are marked every 10 mm on the vertical, horizontal, and height of the 10 rod, 100 plate, and 1000 cube. Description (excerpt from product information) For young children and lower elementary school students, they can understand calculations better by using concrete objects and actually manipulating them, rather than just calculating with numbers. This product is effective for understanding things like carrying over and borrowing. [Examples of use] ● Confirmation of equivalence Example 1: 10 is a set of 10 ones. Actually, stack 10 individual ones on the 10 rod and confirm that they are equal. 100 is a set of 10 tens. Stack 10 tens rods on the 100 plate and confirm that they are equal. The same applies below. ● Exchange play Count numbers greater than or equal to 10, and exchange them for a 10 rod. There may be remainders. The same applies below. ● Carrying over [9 + 2] Add 2 to 9 individual ones and count how many there are. Next, exchange 10 individual ones for a 10 rod. Then express the calculation as 9 + 2 = 11. Repeat the above operation by changing the numbers to carry over and deepen understanding. ● Borrowing [11-2] Take out one 10 rod and one individual one, and then say, "Subtract 2." If you understand the above carrying over operation, the child will notice that they can exchange the 10 rod for 10 individual ones, and they will exchange. Subtract 2 from 11 individual ones and count the remaining numbers. Then express the calculation as 11 - 2 = 9. Repeat the same operation by changing the numbers to borrow and deepen understanding. The above is for your reference. The important thing is to match the child's pace and give them plenty of time to think. Marie-Anne hopes you will make it a fun math time. #ElementarySchoolEntranceExam #EducationalToys #Numbers #Montessori #ShichidaMethod