In Bolivia's highland city La Paz, Maribel Sanchez's children spent much of the last two years huddling over a small smartphone screen to attend online classes amid a lengthy lockdown due to the coronavirus pandemic.
The two boys, aged 11 and eight, frequently missed lessons when their timetables collided as the family had no computer. Bolivian school children only finally returned to in-person classes in March this year, many still not full time.
