The document describes the design cycle, a 5-step process for designing efficiently and solving problems creatively. The steps are: 1) Investigate - identify the problem and research solutions; 2) Design - brainstorm ideas without limitations; 3) Plan - make a logical plan for the desired product; 4) Create - make the product following the plan; 5) Evaluate - assess what could be improved. The design cycle can be used for inventions, projects, and everyday problem solving.