Procedure
1. Get your bottles, tape, note cards, funnel, fountain pen, and measuring cup, sink/water, and camera ready.
2. Get each bottle individually and write each amount of water it can hold on a note card then tape the note card on the bottle you wrote about.
3. Get your funnel put it into each bottle and pour 125 ml of water into each bottle.
(If you don't have a funnel, just try your best to pour all your water into the bottle.)
4. Align each bottle based on size.
5. Record each sound after you blow into each bottle.
6. Take notes on each sound and record each bottle sound.
< Example of #2
2. Get each bottle individually and write each amount of water it can hold on a note card then tape the note card on the bottle you wrote about.
3. Get your funnel put it into each bottle and pour 125 ml of water into each bottle.
(If you don't have a funnel, just try your best to pour all your water into the bottle.)
4. Align each bottle based on size.
5. Record each sound after you blow into each bottle.
6. Take notes on each sound and record each bottle sound.
< Example of #2