Build a simple robot that works as a fan and draws random patterns. An exciting engineering STEM activity for older school children.
Attach markers to the sides of the cardboard base so they touch the ground like legs
Mount the DC motor in the centre of the cardboard base.
Connect the battery connector wires to the motor terminals
Place the robot on paper — when battery is connected the motor vibrates and the markers draw patterns
Adjust the marker positions to change the drawing pattern — observe how motor speed affects output
| School Board | Topic Covered | Grade |
| NCERT/CBSE | Electricity, Force and Motion | Grade 6–7 |
| Samacheer Kalvi | Electricity and Machines | Standard 6–7 |
| Cambridge | Electricity, Forces | Stage 6 |
| Oxford | Electricity, Engineering | Grade 6–7 |