Each of the 28 TIMSS public release mathematics lessons is abbreviated by the following convention:
The country name (see below), followed by the lesson number (1–4).
| A |
= |
Australia |
| C |
= |
Czech Republic |
| HK |
= |
Hong Kong |
| J |
= |
Japan |
| N |
= |
Netherlands |
| S |
= |
Switzerland |
| US |
= |
United States |
In instances that identify a particular clip, the format “C2 3:28–4:30” means the clip in Czech Republic lesson 2, from 3 minutes 28 seconds to 4 minutes 30 seconds.