### Algebra Match

A task which depends on members of the group noticing the needs of others and responding.

### Doughnut Percents

A task involving the equivalence between fractions, percentages and decimals which depends on members of the group noticing the needs of others and responding.

### Arranging Squares

A task which depends on members of the group working collaboratively to reach a single goal.

# Simplifying Doughnut

##### Stage: 4 and 5 Challenge Level:

This is one of a series of problems designed to develop learners' team working skills. Other tasks in the series can be found by going to this article.

### What are you aiming to do?

The aim is for every member of the team to end up with a set of four dominoes which join together to form a "doughnut" where touching ends are algebraically equivalent. Like this:
The task is only successfully completed when everyone on the team has completed their domino doughnut.

#### As a team:

• Responding to the needs of others
• Helping others to do things for themselves.

### Getting started

You will need to work in a team of four. If you have a fifth person available - use them as an observer (see guidance below).
In silence:
Distribute the 16 domino cards randomly amongst the team (four cards each).

### Tackling the problem

#### How to play

Players pass dominoes to other team members in order to help one another complete their doughnut.

#### Rules

• No one can talk or give non-verbal signals to other members of the team.
• Each member of the team starts with four dominoes in front of them.
• The dominoes in front of each person should be visible to everyone.
• Team members can only give dominoes; they cannot take dominoes from someone else.
• Each team member must have at least two dominoes in front of them at all times.

Use an observer to check that the team obeys the rules and to keep a record of when members of the team help someone else (rather than, for example, when they just pass a piece on without looking at what the other person or team actually needs).

Observers can offer one of the hint cards if after a period of five minutes the team is not making any progress.