Ask them to put major reasons for drought. Discuss Environmental, man-made factors involved in water wastage.
Let student think of design to avoid water wastage.
Students will come up with different ideas.
Now, Let discuss with students how they can make water dispenser.
Discuss with student how much they know Switches, how it work, what is water pumping motor. And introduce them to software which is used for Laser Cutter Machine.
Introduce them with 2D Inkscape Design Software.
Introduce them to Laser Machine software (Benbox) for cutting design parts.
Check that students fix Electronic component properly with their respective place or not.
+ve of water pumping motor connect to –ve of switch. - +ve of switch connect to +ve of adapter. - -ve of adapter connect to –ve of motor. Water pumping motor Switch Adapter +ve -ve - -ve - -ve - +ve +ve
Help students for using soldering gun to make connections.
See students make connection properly or not.
Now Water Dispenser is ready.
Let student play with it.