Table 2 Authentic tasks and difficulty ratings
No | Difficulty rate | Task |
|---|---|---|
1 | Very easy | In the circuits section, set up a "single LED circuit" and run the simulation by writing codes to turn on this LED at intervals of 1 s |
2 | Easy | In the circuits section, set up a "traffic light circuit" and write the codes and run the simulation so that the red-yellow-green lamps will turn on for one second, then the other lamp will turn on while one is off |
3 | Difficult | In the Circuits section, set up the "circuit that controls the led intensity with a potentiometer", write the codes and run the simulation |
4 | Easy | In the circuits section, set up the "DC motor to start" circuit and start the motor clockwise for one second, opposite direction for 1 s (it is okay if the order is reversed), then write the codes that stop it and run the simulation |
5 | Very difficult | In the Circuits section, set up a "Two buttons and one led" circuit, write the codes that allow the LED to turn on when one button is pressed, and the LED to turn off when the other button is pressed, and run the simulation |
6 | Very easy | In the Circuits section, write the codes that turn on the 1st led on the Micro:bit card at intervals of 1 s and run the simulation |
7 | Very difficult | In the circuits section, set up a "traffic light circuit" and write the codes and run the simulation so that the red-yellow-green lamps will turn on for one second, then the other lamp will turn on while one is off |
8 | Difficult | In the Circuits section, set up the "circuit that controls the led intensity with a potentiometer", write the codes and run the simulation |
9 | Easy | In the circuits section, set up the "DC motor to start" circuit and start the motor clockwise for one second, opposite direction for 1 s (it is okay if the order is reversed), then write the codes that stop it and run the simulation |
10 | Very easy | In the Circuits section, write the codes that allow the LED in 1st row to turn on at the top when press the A button on the Micro:bit card, and to turn off when the B button is pressed, and run the simulation |