This study discusses step-by-step problem-solving learning plans for initiative and environment-product design creation. The approach used for this study includes ‘related design sheets’ for different procedures. College sophomore students majoring in design were used for the case analysis, the focus of which was on the entire process of creating concept designs with a theme of “facilities in children’s playgrounds”. The researcher first identified six stages in taking a proper approach to the innovative problem-solving learning process, before developing related design sheets that were used during the class for an environment-product design major. The design sheets referred to here were developed in document format, and were intended to bring out the creativity and logic of students during the different stages of design creation. When these sheets were actually applied to the problem-solving learning process, the students demonstrated clear changes, including better creativity and formative expressions that they could develop by using those design sheets. The professor was also able to evaluate the students from a more comprehensive perspective by using the ‘creativity evaluation sheet’ and ‘formative expression evaluation sheet’. Consequently, the professor was able to provide students with advice on what they needed to improve, while reinforcing their logicality in design, and promoting their creativity. These productive results were possible because this case study was based on the problem-solving learning strategy. To be more specific, when developing the design sheets to promote creativity and formative expression ability, the grouped categories in each sheet were broken down into further specific detail, which allowed the professor to identify which areas needed to be improved for each student, before the student could confirm problem areas themselves.