# Selling Soup

**Lesson Plan:** A problem-solving activity about proportional relationships and the ratio concept in the context of maximising profit.

Subject: | Mathematics. |
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Age of students: | 11-14 years. |

Hardware: | Tablets (iPad 1 per class or student). |

Software: | Socrative or Classflow + Apple airserver OR Showme and Reflector OR Plickers. |

Functionalities of Technology: | Sending and displaying Processing and analysing. |

Time needed: | 2-3 hours. |

FaSMEd partner: | University of Newcastle Upon Tyne. |

**Summary:**

This lesson is intended to help you assess how well students are able to solve real-life mathematical problems. In particular, students will develop their abilities in the following areas:

- Using proportional relationships to solve multistep ratio and percent problems.
- Drawing inferences about a population from a random sample of data.
- Making and stating assumptions based on real-life situations.

**Resources:
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**Note:**

This tool describes ways in which digital technology can be used to support formative assessment. The original materials (pen-and-paper) were designed by the Mathematics Assessment Project and can be found under the link above.