https://www.calacademy.org/educators/lesson-plans/introduction-to-scientific-sketching [Web Link]
In this lesson, students learn how to sketch like scientists. You can teach it even if you think you can’t draw! Most of us, adults and children, associate sketching with making a pretty picture. This association can limit us, especially if we feel we are not good at drawing. A scientist sketches to record and communicate information, not to make art. Along with a drawing, a scientific sketch often includes labels and diagrams, questions and explanations. You don’t have to be an artist to create a successful scientific sketch. You simply have to take time, observe closely, and record what you see.