Elephant Carpaccio

Largely inspired by : https://docs.google.com/document/d/1Ls6pTmhY_LV8LwFiboUXoFXenXZl0qVZWPZ8J4uoqpI

Instructions

Break into teams of 2-3 people, one workstation per team.
Preparation - Each team writes down on paper the 10-20 demo-able user stories (“slices”) they will develop and possibly demo. Each should be doable in 3-8 minutes. No slice is just mockup of UI, creation of a data table or data structure. All demos show real input & output (not test harness).
Discussion - Instructor/facilitator leads discussion of the slices, what is and isn’t acceptable, solicits ways to slice finer.
Development - A fixed time-box of 40 minutes, five 8-minute development sprints, clock does not stop. At the end of each sprint, each team shows its product to another team.
Debrief

Product

We manufacture a point of sale capable of issuing cash register tickets.

Accept 4 inputs from the user for one or many items :

Label of item
Quantity of item
Price of item
letter state code

With a given 2 letters state code, we can compute the tax rate

With total price (without tax) we can compute a discount see tabular at end of subject.

Output the recipe like :

label of item     Quantity   Unit price   Total price
label of item     Quantity   Unit price   Total price

-----------------------------------------------------
Total without taxes                             XXXXX
Discount X%                                       -YYY
Tax Y%                                           +ZZZ
-----------------------------------------------------
Total price                                    XXXXXX

Order value	Discount rate
> 1000	3%
> 5000	5%
> 7000	7%
> 10000	10%
> 50000	15%

State	Tax rate
UT	6.85%
NV	8.00%
TX	6.25%
AL	4.00%
CA	8.25%

For other state tax rate see : https://en.wikipedia.org/wiki/Sales_taxes_in_the_United_States

Edit