EDUstick® Creators Club
Seven-Piece Tangram
Make seven fully filled PLA pieces at one scale. Arrange a square on the 90 × 90 mm pattern, a cat and a sailboat, then create your own pictures.
Your outcome: Build a puzzle that can form many different pictures.
Illustration of the finished construction. Full-size (1:1) templates are supplied on a separate sheet.
Session wykonanie i zabawa — szacunek bez limitu lekcyjnego • stage 1/4
Build a fully filled piece
Choose PLA colours for your pieces. Start with L1: close the outline on the sheet over the pattern. From the bottom edge, run adjacent strands from outline to outline. Change direction each time and let each strand overlap the previous one slightly. Fill the whole inside.
Check: K02 - Cool and check. Wait until it has cooled completely. Check for full coverage and a match with the pattern; place the cold figure beside the pattern and check that it is flat.
If it does not work: Repair a gap as in A08.
Parts and methods for this stage
1 × Large triangle L1 · PLA
• template T01
Outline and full coverage as in K01; let it cool and check it as in K02.
Stage outcome
Large triangle L1
Blue / dark emphasis: the part used in this action. Arrows: visual guides. Illustration not to scale.
Session wykonanie i zabawa — szacunek bez limitu lekcyjnego • stage 2/4
Seven figures
L1 is ready. Make L2, M1, S1, S2, Q1 and P1 in order, each on its own T01 outline. Repeat the K01 technique: a closed outline, adjacent strips starting at the edge, and full infill. After each figure, perform the K02 check and place the cold part beside the pattern. Make two large triangles and two small triangles in total.
Check: You have 7 separate, cool pieces: 2 large triangles, 1 medium triangle, 2 small triangles, a square and a parallelogram. Each is flat, fully filled and matches its pattern.
If it does not work: Repair a gap as in A08; replace a piece that stays bent.
Parts and methods for this stage
1 × Large triangle L2; 1 × Medium triangle M1; 1 × Small triangle S1; 1 × Small triangle S2; 1 × Square Q1; 1 × Parallelogram P1 · PLA
• template T01
Outline and full coverage as in K01; let it cool and check it as in K02.
Stage outcome
Large triangle L2 · Medium triangle M1 · Small triangle S1 · Small triangle S2 · Square Q1 · Parallelogram P1 · Large triangle L1
Blue / dark emphasis: the part used in this action. Arrows: visual guides. Illustration not to scale.
Session wykonanie i zabawa — szacunek bez limitu lekcyjnego • stage 3/4
Arrange the square
Arrange the seven cool pieces by following the T02 solution to make a 9×9 cm square. Move and rotate them without forcing them; the pieces must not overlap. Small gaps are expected.
Check: All 7 pieces are in the square. Each lies flat, and none overlaps another.
If it does not work: Compare the arrangement with T02. Check any piece that still does not fit against its own pattern. Do not force it.
Square solution
Paper pattern T02 · Large triangle L1 · Large triangle L2 · Medium triangle M1 · Small triangle S1 · Small triangle S2 · Square Q1 · Parallelogram P1
Blue / dark emphasis: the part used in this action. Arrows: visual guides. Illustration not to scale.
Session wykonanie i zabawa — szacunek bez limitu lekcyjnego • stage 4/4
Cat, sailboat and your own picture
Choose the cat or sailboat from T03. Cover the solution and arrange the picture using all 7 pieces without overlaps. Then reveal the solution and compare. Try the other pattern, then invent your own picture. You may flip P1 over.
Check: Use all 7 pieces in every picture, each piece only once. Your own picture may look different from the examples.
If it does not work: Reveal the solution and compare one piece at a time by its ID and edges. Move or rotate a piece that does not match.
Sailboat: all 7 pieces
Large triangle L1 · Large triangle L2 · Medium triangle M1 · Small triangle S1 · Small triangle S2 · Square Q1 · Parallelogram P1
Blue / dark emphasis: the part used in this action. Arrows: visual guides. Illustration not to scale.