# 3 Bottles - Capacity Problems

Here's a unique Problem Solving activity set in a meaningful context.

This is another from our mathsticks+ member, Jason. He explains that it was designed to offer challenge to his Y4 class. The activity enabled them to solve a range of problems and discuss the strategies they used.

Basically the children have a series of cards with capacities indicated on them. Here's a sample:

They choose a card, and then work in pairs (or small groups) to discuss how they can create the quantity by using three containers of differing sizes (1.35L, 900ml and 330ml).

It may be that they have to combine multiple bottles, or even use the difference between the capacities. For example:

It is quite simple to create 660ml

= fill the 330ml bottle twice

= 330 x 2

However, creating 4170ml is more difficult

= fill the 900ml bottle 5 times, then decant 330ml

= 900 x 5 - 330

The download includes an explanatory sheet and the set of 15 problem cards ranging from Easy and Tricky to Mind Expanding (the download also includes possible solutions).

As always, we would really like to hear what you think of this in the comments and would appreciate all your tweets, Likes and Google Pluses if you enjoy it!

## Comment viewing options

### hours of time saved as this

hours of time saved as this is exactly what I was looking for for my y4 class!! will let you know how it goes
0 users have voted.

### This is truly a fantastic

This is truly a fantastic resource. I used it twice with two year 4 classes of mixed ability. It was brilliant as the children were able to differentiate the tasks themselves based on their own ability. It enforced the capacity learning from earlier in the week and helped the children to work in teams as well as providing an excellent opportunity for problem solving. Thank you, thank you and thank you for uploading this resource!
0 users have voted.

### An excellent resource that

An excellent resource that provided a challenge for even my most able year 5's. The self differentiation worked really well and the children were engaged and absorbed by the task. Many Thanks.
0 users have voted.

### Great resource for problem

Great resource for problem solving! My class enjoyed the challenge. Thanks!
1 user has voted.

### What an excellent resource

What an excellent resource which includes great differentiation and extension for the AGT children. I have also added measuring jugs with water to help the LA visualise the problem. Thanks for sharing this.
1 user has voted.

### A neat variation on the

A neat variation on the classic 'jug' problem. Very well presented ... and instantly useable. Thank you! :-)
1 user has voted.

### What a clever idea- will

What a clever idea- will really encourage the children to visualise the problem, think practically and then really understand the maths! Differentiation included naturally!
0 users have voted.

### I am so pleased that I have

I am so pleased that I have found this site. I work with children with Special needs and have found that games are the best way to reinforce number work, Many of the children find recording difficult so practical activities are brilliant. Have pinned the site on pintrest so hope lots of new people find the site
1 user has voted.