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Free Geometry and mathsArt and pattern

Find the other half

Make eight separate PLA halves: first the outline, then the infill. Mix up the parts and find the pairs that form a heart, a house, a Christmas tree, and a butterfly. Choose the PLA colors yourself; match the pieces by their overall shape.

Age
8+ years
Length
approx. 75 min
Level
Easy
Where you teach
Home
Purpose
Creative
Worksheet Guide (colour) Guide (ink-saving)

Slides for the session

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How to run this session

Stages and timing
  1. Prepare the workstation
  2. Draw the first outline
  3. Fill in the first half
  4. Make the remaining 7 halves
  5. Mix them up and find the other half

What gets built

Make the puzzle and choose the other half based on the complete silhouette.

What it practises
  • Recognizing silhouettes and matching pieces.
  • Drawing connected strands on a flat surface.

Success criteria
  • There are exactly 8 separate PLA halves in any colors you choose; match the pairs by shape.
  • Each half is flat and cool, with a closed outline and strands joined at both ends.
  • The four pairs form a recognizable heart, house, Christmas tree, and butterfly, each approximately 8 × 8 cm.
  • All pairs can be separated and matched again by silhouette, without bending or gluing.

What you need
Filament
PLA
Colours
any PLA color you choose (the illustration color is an example)
Also
3D pen for PLA, with the required accessories, PLA in colors of your choice, Transparent mat from the kit, Templates printed at 100% scale, Ruler with millimeter markings

Files

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How did the session go?

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Version 2026-09-29 Updated 2026-09-29

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