Spain (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

South Sudan (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

South Korea (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

Somalia (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

Solomon Islands (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

Slovenia (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

Slovakia (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

Singapore (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

Sierra Leone (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

Seychelles (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

Serbia (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

Senegal (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

Saudi Arabia (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

São Tomé and Príncipe (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

San Marino (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

Samoa (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

Saint Vincent and the Grenadines (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

Saint Lucia (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

Saint Kitts and Nevis (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

Rwanda (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.