Understanding and conserving the biosphere increasingly requires proficiency in process skills such as critical thinking, data analysis, oral communication, broad synthesis of information, and teamwork across diverse groups. However, a real concern exists that US undergraduate science students do not currently develop these important process skills they will need as professionals. How can we best teach and assess these skills in the undergraduate classroom, for ecology, biology and related fields? Based on our experience leading a national, NSF-funded study that investigates this question, this workshop will present a summary of best practices and potential tools for teaching and assessing skills in the classroom, with an emphasis on critical thinking, data analysis and oral communication. During the workshop participants will receive a set of resources on the topic including literature, rubrics, and ready-to-use open educational resources. They will also have a chance to practice developing a set of teaching and assessment materials for a skill of their choice, and explore how they could be integrated into their courses and teaching. Lunch will not be served, bring your own lunch!