0 0 0 0 4
Lesson 1.2: Counting by 2's to 30 for Chinese Abacus
The beads will move at each step with an
appropriate explanation in this window.
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0 0 0 2 4
Lesson 1.2 Counting by 2's
2

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0 0 0 2 4
Lesson 1.2 Counting by 2's
4

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0 0 0 1 4
Lesson 1.2 Counting by 2's
6
(We're not done yet...) 
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0 0 0 -5 4
Lesson 1.2 Counting by 2's
6
must take away five and...
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0 1 0 1 4
Lesson 1.2 Counting by 2's
add a bead of value 5 from top deck...
6
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0 0 0 1 4
Lesson 1.2 Counting by 2's
then add one.
6
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0 0 0 2 4
Lesson 1.2 Counting by 2's
8

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0 0 0 2 4
Lesson 1.2 Counting by 2's
10
Correct but not done yet...
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0 0 0 -5 4
Lesson 1.2 Counting by 2's
10  ... Hold on...

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0 1 0 1 4
Lesson 1.2 Counting by 2's
10
Correct but still not done yet...
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0 1 0 -2 4
Lesson 1.2 Counting by 2's
... Hold on again...
10
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0 0 1 1 4
Lesson 1.2 Counting by 2's
10
OK now we can move on
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0 0 0 2 4
Lesson 1.2 Counting by 2's
12

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0 0 0 2 4
Lesson 1.2 Counting by 2's
14

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0 0 0 -4 4
Lesson 1.2 Counting by 2's
16  Taking a short cut
Add 2 by taking away 4 and adding 6
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0 1 0 1 4
Lesson 1.2 Counting by 2's
Adding 5 
16  Continued...
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0 0 0 1 4
Lesson 1.2 Counting by 2's
Finish adding 6 by adding 1
16
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0 0 0 2 4
Lesson 1.2 Counting by 2's
18

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0 0 0 -3 4
Lesson 1.2 Counting by 2's
20  Taking a short cut
Add 2 by taking away 8 and adding 10
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0 1 0 -1 4
Lesson 1.2 Counting by 2's
20
Finish taking away 8
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0 0 1 1 4
Lesson 1.2 Counting by 2's
Now add 10 for
20
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0 0 0 2 4
Lesson 1.2 Counting by 2's
22

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0 0 0 2 4
Lesson 1.2 Counting by 2's
24

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0 0 0 -4 4
Lesson 1.2 Counting by 2's
26  Remember short cut...

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0 1 0 1 4
Lesson 1.2 Counting by 2's
26  Still calculating...

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0 0 0 1 4
Lesson 1.2 Counting by 2's
26

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0 0 0 2 4
Lesson 1.2 Counting by 2's
28

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0 0 0 -3 4
Lesson 1.2 Counting by 2's
30  Short cut again...

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0 1 0 -1 4
Lesson 1.2 Counting by 2's
30  ...  not done yet

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0 0 1 1 4
Lesson 1.2 Counting by 2's
30  Done!

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