visual evoked potentials - simple exercise for students

Hello.
Some time ago I prepared a scenario of classes related to EEG signal processing.
Tasks for students are divided into those to be realised during classes (familiarization with the device, signal registration and signal registration during visual stimulation) and to be carried out at home (signal analysis etc.)

Quick instruction:

Select one of the students as the person whose signal will be recorded.
Mount the OpenBCI kit, set the electrodes on the head, run OpenbciGUI and start record.

Run Blinker.

After clicking each button, the following files are created in the Blinker/results folder:
BLINK_dd_mm_yyyy_hh_mm_ss,
Trening_dd_mm_yyyy_hh_mm_ss,
Test_dd_mm_yyyy_hh_mm_ss,
TreningWhite_dd_mm_yyyy_hh_mm_ss,
TestWhite_dd_mm_yyyy_hh_mm_ss,
MATRIX_dd_mm_yyyy_hh_mm_ss,

where dd_mm_yyyy_hh_mm_ss is information about the time of pressing the button.

The BLINK file contains information about the selected flashing frequency and end time (after pressing ESC or after 120s)

The Training file contains information about the time the target was displayed (beer picture), the total number of target blink and all picture blink (second window for one blink), and the end time.

The Test file contains information about the total number of a blink of the target and all picture blink (second window for one image), and the end time.

TestWHITE and TreningWhite contain the same information as Test and Training, but after clicking the button only the images of the target (beer) are displayed.

MATRIX
In the beginning, a picture of the target is displayed for a few seconds.
In one session pictures run in 20 sets. Each picture in the set is displayed in random order once.
The file contains information about which image was the target (first line), information when and which image flashed.

I hope this brief instruction is clear to you.

The program for these simple exercises can be found here:
https://github.com/TMKowiczanin/Blinker/releases/tag/v2

Also, you'll find a MATLAB script that will pre-process the raw data from the MATRIX experiment (it was prepared for GUI <v5, so I'm not sure if importing data work well).

The homework :
Checking for changes in the frequency spectrum depending on the flashing frequency (BLINK)
Creating a pattern of response to the GOAL and detection of the target in the signal - other scenarios.

What do you think I can improve in this exercise to make it attractive?