A floor mid-game: an arch half built, small hands placing the next piece, the rest of the set scattered on a rug.
KG-114
Arch Set
Six geometries in thirty-four pieces, drawn so that an arch stands up on the first try and a tower falls down in an interesting way.
Thirty-four pieces, laid out. 
Mid-build, on a rug. 
How two pieces sit together.
The numbers
- Size
- 96 × 96 × 48 mm
- Also
- Largest piece. Smallest part 44 mm
- Pieces
- 34, six geometries
- Material
- PLA, uncoloured or pigmented
- Finish
- Matte, 0.16 mm layer
- Colour
- Full, Natural, Monochrome
- Weight
- 640 g
- Made to your size
- piece count, 34 to 68 mm
- Ready in
- 9 to 12 days
Every number here is off the drawing rather than off a finished toy. The one rule that is not a target is the 40 mm floor on any part, which clears the small-parts cylinder and does not move.
It is the set a four year old grows into and a seven year old starts stacking sideways.
Why it is shaped like that
Six shapes is enough to surprise a child and few enough that the set can be tidied in a minute, which is what decides whether it comes out again tomorrow.
Living with it
- Every piece clears the small-parts cylinder, and the box states the age the set is drawn for.
- Warm soapy water keeps it true. PLA likes to stay cool, so keep it out of the dishwasher.
- A shelf indoors suits it better than a parked car in August, for the same reason.
Made to order
Pick the colour world and we print it.
Send the code and the world you want. If you are buying for a particular age, say the age: it changes which set we would send you to, and sometimes we will talk you out of the bigger one.
Review and request
This is a catalogue enquiry. Availability and production details need confirmation before an order is agreed.
More ways to play with this set
- Maze Blueprint Mapping
A version with different props. Building pieces support a tabletop version of a drawn layout.
- Shape Shadow Match
A version with different props. Add a torch and paper outlines to turn building pieces into shadow-matching objects.
Block play can combine spatial, motor and language practice. A drawing adds a representation task; free building leaves the child to choose the goal. NAEYC: block construction with toddlers. NAEYC: spatial thinking at home.
There is a connection to sensorial comparison, but a mixed architecture set does not reproduce the Pink Tower or Brown Stair’s controlled sequence. American Montessori Society: early childhood materials. American Montessori Society: Brown Stair.