This A-Level Decision Maths Simplex Algorithm worksheet leads to mastery and develops deep order thinking into the hows and whys of Simplex. Featuring both closed and open questionning, the worksheet explores the ‘behind the scenes’. Students are expected to consider the alogorithmic steps, graphical representations, integer/non-integer solutions, forming questions from the answer, optimisation, constraints, variation of questionning, the use of ICT and has recommended extensions provided. Answers are provided on the second page but some are suggestions as there are open-ended questions. The format is in the Edexcel style.