Tangrams (Geometry for year 3)

Topic : Tangrams

Subtopic : Geometry

Year : 3

Specific objective :

Use all 7 chinese puzzle pieces to make shape and solve problem.

Learning outcome:

• Able to workout puzzle, arrange the seven Chinese puzzle pieces to cover the selected figure exactly.
• To develop student logic thinking.

Geometry (Tangrams)

 The rules are:

1. Click on one of the figure button below the workspace. The outline of the selected figure will be displayed in the workspace.

2. Move, rotate and flip blocks until you cover the figure exactly by using the flip button.

3. The figure below shows that all the 7 pieces have covered the figure.  If you wish to try other figure just click on the ‘Reset button’ and select other figure below the workspace.                           

ACTIVITIES SUGGESTION

Base on student ability:

1. Lower ability: Use hint button and ask the student to arrange according to the figure by moving, flipping and rotate the pieces.
2. Medium ability: Select simple figure by moving, flipping and rotate the pieces.
3. Higher ability: Select more complicated figure and complete the task.

Manual method:

1. Divide manila card into 2 parts.
2. First part: Draw a big figure.
3. Second part: Cut the other part into smaller pieces ( 5-7 pieces with different shape)
4. Ask the student to try, occupy the figure by using the smaller pieces shaped card to cover the figure. 

Java Sketchpad

Features of Java Sketchpad

(1) dynamic (it has many parameters);
(2) interactive (teachers and students can control it);
(3) easy access (it could be posted in Internet);
(4) easy to use (teachers need not be too familiar with the software);
(5) flexible (it could be used as teachers' demonstration or students' exploration);
(6) fast (the total size is less than 1.44Mb);
(7) low cost (it is free of charge for non-commercial purpose).

Diagram below shows the sketchpad interface

 

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MSW Logo

to sq

setsc [0 0 0]
repeat 4 [fd 50 rt 90]

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setpc 1
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setpc 2
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setpc 3
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rt 10
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setpc 4
repeat 4 [fd 70 rt 90]

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rt 10
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setpc 5
repeat 4 [fd 75 rt 90]

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rt 10
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setpc 6
repeat 4 [fd 80 rt 90]

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rt 10
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setpc 8
repeat 4 [fd 85 rt 90]

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rt 10
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setpc 9
repeat 4 [fd 90 rt 90]

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rt 10
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setpc 1
repeat 4 [fd 95 rt 90]

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rt 10
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setpc 2
repeat 4 [fd 100 rt 90]

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rt 10
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setpc 3
repeat 4 [fd 105 rt 90]

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rt 10
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setpc 4
repeat 4 [fd 110 rt 90]

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setpc 5
repeat 4 [fd 115 rt 90]

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setpc 6
repeat 4 [fd 120 rt 90]

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rt 10
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setpc 8
repeat 4 [fd 125 rt 90]

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rt 10
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setpc 9
repeat 4 [fd 130 rt 90]

pu
rt 10
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setpc 1
repeat 4 [fd 135 rt 90]

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rt 10
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setpc 2
repeat 4 [fd 140 rt 90]


pu
rt 10
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setpc 3
repeat 4 [fd 145 rt 90]

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setpc 4
repeat 4 [fd 150 rt 90]

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setpc 5
repeat 4 [fd 155 rt 90]

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setpc 6
repeat 4 [fd 160 rt 90]

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setpc 8
repeat 4 [fd 165 rt 90]

pu
rt 10
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setpc 9
repeat 4 [fd 170 rt 90]

pu
rt 10
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setpc 1
repeat 4 [fd 175 rt 90]


end