Lesson 3
What precautions should be taken when moving the Ferris wheel?
While waiting for their turn, people should stand at a safe distance without crossing the boundary line. The speed of the Ferris wheel must be adjusted according to the size of the wheel. While the wheel is moving, all passengers must sit with their seat belts fastened or the safety frames lowered.
The practical part of the work
Step 1. We make a cardboard base with a size of 45×37. We make a rack of skewers, for this, we first tie an elastic band to the top of the skewer. And we attach it to the base with hot glue. The distance between the two racks should be 21 cm.
Step 2. We connect our wheel to the racks with the help of rubber bands
Now we will consider how our wheel will spin, and how to connect the LED and the motor into one source
Step 3. Take the gear motor, examine it, then connect the motor contacts to the battery compartment
Take 2 covers of the same size and make a hole on one cover corresponding to the diameter of the skewer cover, and on the other make a hole in the center corresponding to the size of the motor shaft (end-to-end) – the cover rotates with the shaft (must rotate freely)
Step 4. Then attach the motor to the bottle cap using hot glue. 1)We take two disposable cups and cut out the bottom to fix it on the lid with a motor. 2) We also attach the bottom of the glasses to the second lid from both sides.
Step 5. Now we connect them with a pre-prepared elastic band (connect the ends)
Step 6
For our wheel to spin and the LEDs to burn, we connect them to one battery. For this:
1) Take a long wire, and connect it with the wire that connects the LEDs.
2) We draw a long wire around the wheel, connect it to the wire as in the picture
3) We also connect the other wires as shown in the figure (you cannot connect the two ends of the LED wire)
Wires that interfere can be sealed with duct tape.
Step 7. Our Ferris wheel is ready
Evaluation
PBL evaluation criteria:
Project-based learning (project-based learning) is a learning method in which students acquire knowledge and skills by working on one project for 3 or 4 weeks to research and find an answer to a genuine, interesting, and complex question, problem, or challenge (then follow the PBL Rubrics link to the Rubrics).
