Story Slicing – Breaking Down User Stories

Story Slicing is an essential technique for transforming overly large user stories into smaller, deliverable slices. By using methods such as SPIDR and INVEST, this approach promotes prioritisation and improves workflow, thereby reducing Cycle Time. Participants learn to identify the key elements of a user story and break them down into manageable tasks, facilitating better estimation and a smoother workflow.

Walkthrough

1. 1

   Introduction and Objectives

   10 min

   The facilitator presents the concept of Story Slicing and its importance in agile project management. They explain the objectives of the workshop: to learn how to break down user stories to improve workflow and prioritisation. Participants are invited to share their experiences with overly large user stories.

   Tip — Use concrete examples from past projects to illustrate the importance of slicing.

2. 2

   Presentation of SPIDR and INVEST Methods

   15 min

   The facilitator explains the SPIDR (Spike, Path, Interface, Data, Rules) and INVEST (Independent, Negotiable, Valuable, Estimable, Small, Testable) methods. They describe how these methods help to break stories into smaller, manageable elements. Participants take notes and ask questions to clarify their understanding.

   Tip — Prepare visual aids to illustrate each method and its components.

3. 3

   Practical Slicing Exercise

   30 min

   Participants are divided into small groups and given a complex user story. Their task is to break it down into smaller sub-stories using the SPIDR and INVEST methods. The facilitator circulates among the groups to offer advice and clarifications.

   Tip — Encourage participants to think about the added value of each sub-story for the client.

4. 4

   Results Sharing

   20 min

   Each group presents its sliced sub-stories and explains the reasoning behind their breakdown. Other participants can ask questions and provide feedback. The facilitator highlights best practices and suggests possible improvements.

   Tip — Use a whiteboard to note key points from each group's discussions.

5. 5

   Summary and Conclusion

   10 min

   The facilitator summarises the key points of the workshop and reiterates the importance of breaking down user stories for an effective workflow. They invite participants to reflect on how they can apply these techniques in their current projects.

   Tip — Encourage participants to commit to applying these techniques in their next sprint.

Variants

• Use real user stories from participants' projects for a more relevant exercise.
• Organise a follow-up a few weeks later to discuss the results obtained after applying the techniques.
• Introduce project management software to simulate the slicing and prioritisation of user stories.