Con lăn đóng dấu luyện toán (Math Practice Roller Stamp)

🧮 Rotating Math Roller: Learning Math Through Play!

Turn math study into a fun and creative activity! This 3D-printed modular stamp is the perfect tool for parents, teachers, and children. It allows you to create endless operations and exercises in seconds, making learning dynamic and visual.

✨ Key Features:

• Full Symbol Set: Includes the four fundamental operators (+, -, x, /) and comparison symbols (>, <, =).

• Modular Design: Thanks to the interchangeable strips, you can customize the rollers to vary numbers and symbols as you wish.

• Educational & Interactive: Ideal for primary school students to practice multiplication tables, column addition, or number comparisons.

• Easy to Use: Ergonomic handle designed specifically for small hands.

🛠 Printing Notes:

• Recommended Material: PLA (for rigid parts) and TPU A95 or a soft filament for the number strips (for better ink absorption).

• Supports: Not necessary if oriented correctly.

🔧 Step-by-Step Assembly Instructions

• Prepare the Strips: Take the flexible TPU strips and wrap them around the individual rollers. Ensure the numbers/symbols are facing outwards.

• Secure the Fit: Align the ends of the strip with the slots on the roller until they click perfectly into place.

• Core Assembly: Slide the assembled rollers and the springs onto the central hexagonal shaft.

• Frame Setup: Place the shaft with the rollers into the main housing base.

• Locking Mechanism: Insert the side support and the locking screw to keep everything aligned.

• Final Check: Ensure the rollers can spin freely to change the operations, then tighten the side knob.