Saturday, 13 September 2014

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Montessori Activity: Dynamic Addition with Golden Beads - Ten Place Value

1. Arrange the materials according to the picture above.
2. Invite your child to read the first equation or you can also read it together, for e.g. 36+27=?


AGE: 5.5 years old

OBJECTIVE: To introduce the child to double digit dynamic addition

MATERIALS:

1. 19 unit beads
2. 9 ten-bars
3. 1 double digit addition worksheet
4. 3 felt pieces
5. 1 pencil and eraser

PRESENTATION:

1. Arrange the materials according to the picture above.

2. Invite your child to read the first equation or you can also read it together, for e.g. 36+27=?

3. Point to the unit place value of the first addend in the worksheet and ask, "How many units are there?" Your child should answer 6.

4. Take 6 unit beads and place it on the felt piece to the right of the worksheet.

5. Next, point to the ten place value of the first addend and ask, "How many tens are there?" Your child should answer 3 tens.

6. Take 3 ten-bars from the first felt piece and place it on the right felt piece to the left of the selected unit beads.

7. Point to the second addend and repeat the process. Invite him to count out the unit beads and ten-bars from the second addend, i.e. 7 unit beads and 2 ten-bars and place them on the second felt piece below the first addend's collected beads.

8. Add the beads together by placing the second addend's collected beads together with the first addend's collected beads.

9. Invite your child to count the unit beads and when he reaches the 10th unit, ask your child to exchange for 1 ten-bar, saying "10 units is the same as 1 ten-bar," and place the it with the other ten-bars.

10. Ask your child to count the remainder units, i.e. 3 units in this case, and write the number in the unit place on the worksheet.

11. Ask your child to count the ten-bars, i.e. 6 ten-bars in this case, and write the number on the ten place on the worksheet.

12. Read out the question and answer together, for e.g. 36+27=63

13. Invite your child to try with the next equation.

ADDITIONAL INFORMATION:



REFERENCES:
3. Point to the unit place value of the first addend in the worksheet and ask, "How many units are there?" Your child should answer 6.
4. Take 6 unit beads and place it on the felt piece to the right of the worksheet.


5. Next, point to the ten place value of the first addend and ask, "How many tens are there?" Your child should answer 3 tens.
6. Take 3 ten-bars from the first felt piece and place it on the right felt piece to the left of the selected unit beads.

7. Point to the second addend and repeat the process. Invite him to count out the unit beads and ten-bars from the second addend, i.e. 7 unit beads and

2 ten-bars and place them on the second felt piece below the first addend's collected beads.

8. Add the beads together by placing the second addend's collected beads together with the first addend's collected beads.

9. Invite your child to count the unit beads and when he reaches the 10th unit, ask your child to exchange for 1 ten-bar, saying "10 units is the same as 1 ten-bar," and place the it with the other ten-bars.


10. Ask your child to count the remainder units, i.e. 3 units in this case, and write the number in the unit place on the worksheet.
11. Ask your child to count the ten-bars, i.e. 6 ten-bars in this case, and write the number on the ten place on the worksheet.

12. Read out the question and answer together, for e.g. 36+27=63. If your child has not written the answer down, do it now.




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