Ebru Demirkoz found mentalup-brain-teasers:

• Significantly improves behaviour or wellbeing“Improvement of learning and thinking skills, especially attention”
• Moderately reduces teacher workload“Reduces attention courses in school and making easy to track their cognitive development and comparision by age groups.”
• Significantly improves teaching efficiency and productivity“Students using MentalUP regularly improves their attention and focusing skills. So learning is becoming more efficient at courses for these students.”