Fun Activities

On The Job



pH and Pool Technicians 

PrimaryPrimary  MiddleMiddle

LiteracyAustralian Curriculum General Capability: Literacy

1. Read the following information and visit the website to understand "pH"  Reading

"The pH level indicates how acidic or alkaline the water is at any given time. A pH level of 7 means that water is neutral; above 7 means the water is alkaline, while below 7 indicates acidity. You should aim for a pH level of between 7 and 7.6. If the water pH is higher than 8, anyone who swims in the pool is at risk of skin rashes, while a pH of lower than 7 can sting the swimmers' eyes.

Some of the many factors that can affect your pool's pH level include heavy rain, lots of swimmers and pool chemicals."
(Source: Better Health Channel)

The pH Factor - Miami Science Museum

pH Factor

This site explains pH and has been translated into Chinese and Japanese.

2. Play the pH Scale Game

pH Scale Game


3. Make Red Cabbage pH Paper following the instructions below:

How to make Red Cabbage pH Paper

Red Cabbage pH paper

4. After you have made this pH Paper, test it on pool water! Was it a neutral pH (7)?


What lies lurking in your swimming pool? Fact check!

High SchoolSecondary

LiteracyAustralian Curriculum General Capability: Literacy

Personal and social capabilityAustralian Curriculum General Capability: Personal and social capability

1. Read the following article in The Conversation 25 December 2015 and draw up a list of Reading microorganisms, their names, find a photo or image and describe the diseases they cause in a table.


The Conversation

Name of microorganism Picture of Microorganism  Diseases caused

2. Now read the following article from The Australian Academy of Science Reading

Australian Academy of Science

3. Draw up a fourth column on your table called "Interesting facts" and add any information that you found interesting from this new article from the Australian Academy of Science.

What did you find particularly "yucky"?


Did You Know?

Peeing in the Swimming Pool can change its chemistry?

Chemistry of the Swimming Pool
(Source: ABC Splash)

Ammonia and ammonia-like compounds found in human sweat and urine react with hypochlorous acid, producing chloramines. It is these, not chlorine, that cause the
characteristic smell of swimming pools. They can cause wheeziness and sore eyes for some swimmers.

Peeing in the pool helps produce more trichloroamine, as the uric acid present in urine helps to create it. It also produces small amounts of cyanogen chloride. Chlorine contained in these kinds of by-products of chlorination is referred to as ‘combined chlorine’ (CC).
(Source: ABC Splash)

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