Stacking Number Blocks – Visual Addition Learning Tool

These 3D printable number blocks are designed to teach addition in a clear, visual, and hands-on way.
Each number has a height proportional to its value, allowing learners to physically stack numbers and see the result.

How it works

Numbers can be placed on top of each other.
The total height of the stacked numbers matches the height of their sum.

Example:

• Stack 3 and 4 together
• The combined height is exactly the same as 7

This makes addition easy to understand at a glance.

Perfect for

• Kids learning basic math
• Homeschooling
• Classrooms and educational workshops
• Hands-on and visual learners
• Montessori-style learning environments

Features

• Stackable number design
• Proportional height system
• Stable and consistent geometry
• Color-friendly (easy to print in different colors)
• No zero included by design
• Clean, functional shape without unnecessary decoration

3D Printing Recommendations

• Material: PLA
• Layer height: 0.2 mm
• Infill: 15–20%
• Supports: Not required
• Scaling: Scale all numbers together to keep proportions accurate

Educational Benefit

This model helps children understand addition through physical interaction, not memorization.
By comparing heights, learners can instantly verify their calculations.