About this 3D model

A robust and durable version of a well-known educational tool used by teachers. The Tetra’Aide is traditionally made from paper or cardboard, but these versions wear out quickly in the classroom. This 3D printable version keeps all its benefits while providing a strong, reusable, and customizable solution . Origin of the tool The Tetra’Aide is widely used in classrooms, especially in primary education. It is generally linked to teaching practices focused on: student autonomy differentiated instruction cooperative learning approaches It is commonly found as paper models shared by: teachers educational blogs open educational resources ? This 3D version does not reinvent the tool — it offers a durable and modular physical improvement . Classroom uses The Tetra’Aide allows students to communicate visually with the teacher without interrupting the lesson. Common uses: ? Independent work → student feels confident ? Needs help → student signals a difficulty ? Stuck → student does not understand ? Group work → collaborative activity Other variants: ? Emotional expression (widely used in early education) ? Group work organization ? Self-assessment ?️ What this 3D version brings - Much more durable than paper versions - Fully reusable - Modular and customizable - Suitable for different school levels Two versions available This model offers two assembly options: Glue version Simple assembly Ideal if you don’t want to use screws Screw version 4 × M3 x 10 mm screws More robust and removable Perfect for intensive use Availiable variants (All variants are availiable for the Glue or Screw version) You can create your own combinations depending on your needs and I can create custom pictogram faces on request to fit your specific needs. Central shell (Center) Main structural part of the Tetra’Aide. Designed to hold and assemble the different faces. Provides stability and durability to the object. ? Positive emotion face Smiling face pictogram. Indicates the student is comfortable, understands, and is working confidently. ? Neutral face Neutral face pictogram. The student is thinking or experiencing a slight difficulty. ☹️ Difficulty face Sad face pictogram. The student is stuck and needs help. ? Group work face Handshake pictogram. Indicates collaborative work or group activity. ❓ Question face Question mark pictogram. The student has a question or something they don’t understand. ? Shell – Blank version Unmarked face. Allows simple use with a color-coded system (green = OK, red = needs help…). Ideal for full customization. ? Urgent help face Lifebuoy pictogram. Indicates the student needs immediate or priority assistance. ? Calm / focused face Relaxed student pictogram. Indicates the student is calm, focused, and working quietly without needing assistance. ?️ Printing recommendations Material: PLA Layer height: 0.2 mm No supports required Easy and fast to print ? Educational context This model was adapted to real classroom constraints: frequent handling durability ease of use It provides an accessible alternative without relying on expensive or disposable commercial versions. ? Approach This project follows a philosophy of: accessibility waste reduction knowledge sharing ❤️ Support the project If you find this model useful: ? Like ? Share ? Boost Boost Me ❤️ Support the project Membership Included in my commercial license Classroom Tetra Aide – Modular Teacher Tool Set Mathematiques Base 10 Count Box Gears Puzzle - Educationnal Kit Follow me on Instagram / TikTok / Facebook / Beacons