Development of Teaching Materials of One-Variable Linear Equations Through Picture Stories Floating Markets

STEAM learning is an innovative learning approach because it is considered up-to-date in the industrial era 4.0. capable of supporting 4 (four) basic skills such as critical thinking, creativity, communication, and collaboration. One of the efforts to implement this requires flexible teaching materials with the primary material of mathematics. The one-variable linear equation is the direct mathematical material because it is still found that students still find it challenging to solve story form problems. One of the reasons is because students are not used to working on story problems in learning. Engaging and contextual teaching materials are expected to solve these problems This research aims to develop teaching materials for illustrated stories with valid one-variable linear equations with floating market nuances. This research was conducted using the Research and Development method using the model developed by Thiagarajan, Semmel & Semmel, namely the 4D model. Still, the steps taken were to define, design, and create. Validity data were collected through validation sheets and analyzed using descriptive statistics. Based on the results of the validity of experts as many as four people, the percentage of teaching materials' fact was 87.89%. This means that the teaching materials were developed to meet the validity criteria used. However, there are still shortcomings in the teaching materials where variations in character expressions and equations in illustrated stories have not been seen.