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Based	
  on	
  h*p://www.netobjec4ves.com/system/files/DotGame_vas11_0.pdf	
  
§  Illustrate Little’s law
§  Visualize why high resource utilization might be bad for
flow efficiency
§  Create an understanding that the most efficient way of
getting flow is adapting to constraints
§  Show how people in front of a bottleneck are actually
causing problems when adding more work
§  Show that its better not to work in many situations
§  Show the effects of big batches
§  Show that much work in progress adds waste and make
it harder to fix and detect problems
§  Show the value of customer collaboration
§  Show the value of in process testing
Purpose
Peter Antman
§  Material
–  3x3 yellow post-its (300 post-its)
–  Color dots
§  Team of 8 persons and at least a couple of
observers
§  The game is played in 3 round
–  5 min pre
–  5 min running
–  10 min discussion
Set up
Peter Antman
§  From queuing theory
§  The number of items in a system (WIP) equals
the arrival rate (or throughout) times the average
time an item spend in the system (lead time).
§  WIP = TP * LT
Little’s law
Peter Antman
We are a software shop, that
produces this:
Peter Antman
The group roles
§  Business Analyst - Picks 6 post-its
§  Technical Analyst - Puts on yellow dot
§  Designer - Puts on red dot
§  UI Developer - Puts on green dot
§  Developer - puts on both blue dots
§  Tester - discards anything of poor quality
§  Project Manager - uses stopwatch
§  Customer - receives the finished product
Peter Antman
Workflow
Business	
  analyst	
  
peels	
  of	
  6	
  post-­‐its	
  
Technical	
  analyst	
  
put	
  yellow	
  dot	
  on	
  
Designer	
  
put	
  red	
  dot	
  on	
  
UI	
  designer	
  	
  
put	
  both	
  green	
  dots	
  on	
  
Developer	
  	
  
put	
  both	
  blue	
  dots	
  on	
  
Make	
  those	
  blue	
  dots	
  touch,	
  but	
  not	
  overlap!	
  
Tester	
  check	
  against	
  spec	
  
Puts	
  in	
  defect	
  area,	
  or	
  give	
  to	
  customer	
  
Peter Antman
§  It’s important that every one work on maximum
capacity
§  Everyone is a specialist
§  We work in big batches (6)
§  You hand of your work to the next inbox when
finished
§  You are not allowed to talk with each other
Round 1
Peter Antman
Setup
BA	
  
TA	
  
Design	
   UI	
  
Dev	
  
Test	
  
Material	
  PM	
  
Times	
  5	
  minute	
  round	
  
Times	
  first	
  batch	
  
Warns	
  team	
  1	
  min	
  before	
  	
  
finish	
  
Customer	
  
Accepts	
  deliveries	
  
Peter Antman
§  Don’t accept anything where the blue dots are
overlapping or not touching
§  The dots in the corners should be fairly well
spaced from the two sides
§  Respond to people when asked, but don’t
volunteer information
To customer
Peter Antman
§  PM counts
–  # of completed post-its
–  # of accepted post-its
–  # of post-its that are in progress (WIP)
§  How long did the first batch take? Lead time?
§  Throughput # of completed post-its/5 minutes
§  Lead time (now) WIP/TP
Debrief
Round	
   WIP	
   Total	
   Defects	
   OK	
   TP	
   LT	
  
60	
   18	
   16	
   2	
   3,6	
   16,7	
  
Peter Antman
§  Only do work when the ”outbox” is empty – pull
§  Once piece flow (not 6 post-its a time)
§  Could you do in-place testing (test should not
find any errors)
§  PM measures several post-its lead time
§  Customer answers questions
Round 2
Peter Antman
§  PM counts
–  # of completed post-its
–  # of accepted post-its
–  # of post-its that are in progress (WIP)
§  How long did the first batch take? Lead time
§  Throughput # of completed post-its/5 minutes
§  Lead time (now) WIP/TP
Debrief 2
Round	
   WIP	
   Total	
   Defects	
   OK	
   TP	
   LT	
  
4	
   24	
   1	
   23	
   4,8	
   24s	
  
Peter Antman
§  Grab one post-it and work as a team
§  Honor your specialties
§  Discuss first how to organize team work
§  Customer allowed to intervene
§  Testing part of work
Round 3
Peter Antman
Peter Antman

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Introduction to Basic Drill and Ceremonies.pdfIntroduction to Basic Drill and Ceremonies.pdf
Introduction to Basic Drill and Ceremonies.pdf
 

Lean Dot Game

  • 1. - or use the Flow Luke Peter Antman Based  on  h*p://www.netobjec4ves.com/system/files/DotGame_vas11_0.pdf  
  • 2. §  Illustrate Little’s law §  Visualize why high resource utilization might be bad for flow efficiency §  Create an understanding that the most efficient way of getting flow is adapting to constraints §  Show how people in front of a bottleneck are actually causing problems when adding more work §  Show that its better not to work in many situations §  Show the effects of big batches §  Show that much work in progress adds waste and make it harder to fix and detect problems §  Show the value of customer collaboration §  Show the value of in process testing Purpose Peter Antman
  • 3. §  Material –  3x3 yellow post-its (300 post-its) –  Color dots §  Team of 8 persons and at least a couple of observers §  The game is played in 3 round –  5 min pre –  5 min running –  10 min discussion Set up Peter Antman
  • 4. §  From queuing theory §  The number of items in a system (WIP) equals the arrival rate (or throughout) times the average time an item spend in the system (lead time). §  WIP = TP * LT Little’s law Peter Antman
  • 5. We are a software shop, that produces this: Peter Antman
  • 6. The group roles §  Business Analyst - Picks 6 post-its §  Technical Analyst - Puts on yellow dot §  Designer - Puts on red dot §  UI Developer - Puts on green dot §  Developer - puts on both blue dots §  Tester - discards anything of poor quality §  Project Manager - uses stopwatch §  Customer - receives the finished product Peter Antman
  • 7. Workflow Business  analyst   peels  of  6  post-­‐its   Technical  analyst   put  yellow  dot  on   Designer   put  red  dot  on   UI  designer     put  both  green  dots  on   Developer     put  both  blue  dots  on   Make  those  blue  dots  touch,  but  not  overlap!   Tester  check  against  spec   Puts  in  defect  area,  or  give  to  customer   Peter Antman
  • 8. §  It’s important that every one work on maximum capacity §  Everyone is a specialist §  We work in big batches (6) §  You hand of your work to the next inbox when finished §  You are not allowed to talk with each other Round 1 Peter Antman
  • 9. Setup BA   TA   Design   UI   Dev   Test   Material  PM   Times  5  minute  round   Times  first  batch   Warns  team  1  min  before     finish   Customer   Accepts  deliveries   Peter Antman
  • 10. §  Don’t accept anything where the blue dots are overlapping or not touching §  The dots in the corners should be fairly well spaced from the two sides §  Respond to people when asked, but don’t volunteer information To customer Peter Antman
  • 11. §  PM counts –  # of completed post-its –  # of accepted post-its –  # of post-its that are in progress (WIP) §  How long did the first batch take? Lead time? §  Throughput # of completed post-its/5 minutes §  Lead time (now) WIP/TP Debrief Round   WIP   Total   Defects   OK   TP   LT   60   18   16   2   3,6   16,7   Peter Antman
  • 12. §  Only do work when the ”outbox” is empty – pull §  Once piece flow (not 6 post-its a time) §  Could you do in-place testing (test should not find any errors) §  PM measures several post-its lead time §  Customer answers questions Round 2 Peter Antman
  • 13. §  PM counts –  # of completed post-its –  # of accepted post-its –  # of post-its that are in progress (WIP) §  How long did the first batch take? Lead time §  Throughput # of completed post-its/5 minutes §  Lead time (now) WIP/TP Debrief 2 Round   WIP   Total   Defects   OK   TP   LT   4   24   1   23   4,8   24s   Peter Antman
  • 14. §  Grab one post-it and work as a team §  Honor your specialties §  Discuss first how to organize team work §  Customer allowed to intervene §  Testing part of work Round 3 Peter Antman