19.11. 4.B. SÕITMA

1.  https://learningapps.org/display?v=pn03wn7b319

2. https://learningapps.org/display?v=pm3h5qvgc19

3. https://learningapps.org/display?v=p02mza1rt17

4. https://learningapps.org/display?v=pr4qg27xa19