Squirt: Two containers
![Illustration: Large, round, transparent container with human feet with red toenails, labelled 'a'.](assets/images/container_red_toenails.png)
![Illustration: Medium, round, transparent container with human feet with black toenails, labelled 'b'.](assets/images/container_black_toenails.png)
a and b are containers.
As you can see, a is a lot bigger than b.
a
b
![Illustration: Large, round, transparent container with human feet with red toenails, labelled 'a'.](assets/images/container_red_toenails.png)
![Illustration: Medium, round, transparent container with human feet with black toenails, labelled 'b'.](assets/images/container_black_toenails.png)
In fact, a can hold exactly twice as much as b.
![Illustration: Large, round, transparent container with human feet with red toenails, labelled 'a'.](assets/images/container_red_toenails.png)
![Illustration: Medium, round, transparent container with human feet with black toenails, labelled 'b'.](assets/images/container_black_toenails.png)
The relationship between a and b is between their volumes.
Another way of saying this is ...
a
=
b
+
b
![Illustration: Large, round, transparent container with human feet with red toenails, labelled 'a'.](assets/images/container_red_toenails.png)
![Illustration: Medium, round, transparent container with human feet with black toenails, labelled 'b'.](assets/images/container_black_toenails.png)
![Illustration: Medium, round, transparent container with human feet with black toenails, labelled 'b'.](assets/images/container_black_toenails.png)
![Illustration: Large, round, transparent container with human feet with red toenails, labelled 'a'.](assets/images/container_red_toenails.png)
![Illustration: Medium, round, transparent container with human feet with black toenails, labelled 'b'.](assets/images/container_black_toenails.png)
![Illustration: Medium, round, transparent container with human feet with black toenails, labelled 'b'.](assets/images/container_black_toenails.png)
is the same as
a
= 2 x
b
or a = 2 x b
![Illustration: Large, round, transparent container with human feet with red toenails, labelled 'a'.](assets/images/container_red_toenails.png)
![Illustration: Medium, round, transparent container with human feet with black toenails, labelled 'b'.](assets/images/container_black_toenails.png)
You can use Squirt: Two containers to explore these relationships.
Squirt: Two containers
How to use
How much bigger is b than a?
b = x a
OK
![Tap handle that animates when selected.](assets/images/clear.png)
![Sink plug that animates out when selected.](assets/images/clear.png)
![Tap handle that animates when selected.](assets/images/clear.png)
![Sink plug that animates out when selected.](assets/images/clear.png)
a
![Clear fish-bowl type of container.](assets/images/clear.png)
![Animated water indicating how much water is in the container.](assets/images/clear.png)
b
![Clear fish-bowl type of container.](assets/images/clear.png)
![Animated water indicating how much water is in the container.](assets/images/clear.png)
![Animated water pouring into container.](assets/images/clear.png)
![Animated water squirting from container a into container b.](assets/images/clear.png)
![Animated water squirting from container b into container a.](assets/images/clear.png)
Level 0
Have you used Squirt: Two containers before?
What type of problem would you like to solve?
How many of b does it take to fill a?
When you think you've found out, type in the answer.
a =x b
a
![Clear fish-bowl type of container.](assets/images/clear.png)
![Animated water indicating how much water is in the container.](assets/images/clear.png)
b
![Clear fish-bowl type of container.](assets/images/clear.png)
![Animated water indicating how much water is in the container.](assets/images/clear.png)
![Animated water pouring into container.](assets/images/clear.png)
![Animated water pouring into container.](assets/images/clear.png)
![Animated water squirting from container a into container b.](assets/images/clear.png)
![Animated water squirting from container b into container a.](assets/images/clear.png)
That's not right.
The water in one container goes into another container 6 times.
This relationship can be written as c = 6b.
Type this number into the equation.