Do you need a lesson PowerPoint to introduce using a protractor to measure angles? This FREE measuring angles lesson includes built in: math vocabularyexplicit modeling with a protractorerror analysis using common student errorsstudent discussion questionsguided practice(either print a slide or assign the slide to students online) independent practice, and formative assessment to help you teach this tricky measurement topic!Don't forget to leave a review and check out these other 4th grade resou