PAM — Uruguay's National Adaptive Maths Platform: CINVE Finds +0.2 SD, Largest for Lower-Income Pupils

The Plataforma Adaptativa de Matemática (PAM) is an online adaptive learning tool aligned with Uruguay's national curriculum, offered to the education system by Plan Ceibal since 2013. It holds roughly 100,000 exercises and gives pupils feedback tailored to their skill level; it was built on the German Bettermarks engine. Use is optional for each teacher.
Scale: by 2016 about half of pupils in grades 3–6 of primary school had used PAM. Plan Ceibal reported more than 100,000 pupils and about 30 million exercises completed in 2018, with the platform extended to lower secondary (ciclo básico).
Evidence: the first impact evaluation, by the economic research centre CINVE (Perera & Aboal, 2018), used longitudinal test data for a sample of primary pupils (the government release cites 2,143 pupils in 237 schools, with data from the 2013 TERCE and a 2016 national assessment). It finds a positive effect of 0.2 standard deviations on maths scores, with the impact larger the lower the pupils' socioeconomic level and no difference by gender. The 2017 government release summarises this as roughly 30% better maths learning for users; it also reports larger gains when PAM was used in class with teacher guidance than when pupils used it alone. A 2017 CINVE analysis found no reading difference between users and non-users.
Caveats: the design is observational, not randomised, and use was voluntary, so self-selection cannot be ruled out. The release does not state how the 30% is defined, and Plan Ceibal both runs the platform and publicised the result; its president also disputed parts of other analyses. Public sources give little on data-protection arrangements. The clear lessons are that adaptive practice can help narrow socioeconomic gaps when teachers integrate it into lessons, and that uptake depends on teacher choice.

Read the full analysis: https://redi.anii.org.uy/jspui/handle/20.500.12381/415