The A3 method is a problem-solving tool that originated from Toyota and is named after the A3 paper size that is used to document the entire process on a single page. This method consists of eight steps that guide you through the PDCA cycle, which is an approach to continuous improvement. The eight steps are clarifying the problem, breaking down the problem, setting a target, analyzing the root causes, developing countermeasures, implementing countermeasures, evaluating results and process, and standardizing and sharing. To clarify the problem, you need to define the current situation, the desired situation, and the gap between them. Use data and facts to describe the problem and its impact. To break down the problem, use tools like 5 Whys or fishbone diagram to drill down to the root causes. To set a target, establish a measurable and realistic goal that you want to achieve by solving the problem. Specify expected outcomes and benefits, timeline, and resources needed. To analyze root causes, verify and validate them using data and evidence. To develop countermeasures, generate and evaluate possible solutions that address the root causes. Use tools like brainstorming or cost-benefit analysis to select the best option. To implement countermeasures, execute chosen solution and monitor progress and results. Use tools like Gantt chart or action plan to track tasks and responsibilities. Evaluate actual results with target to assess effectiveness and efficiency of solution. Use tools like run chart or Pareto chart to display data and trends. If results are satisfactory, make solution new standard and document changes and lessons learned. Share findings with other FSEs and stakeholders.