Final answer:
To create a custom slide master, select the last slide layout and click the Insert Layout button. PowerPoint lecture slides are a foundational tool for instructors, complete with learning objects and images to aid lecture development.
Step-by-step explanation:
To create a custom slide master in PowerPoint, after selecting the last slide layout in the Master Thumbnails pane, you should click the Insert Layout button in the Edit Master group. This action allows you to create a custom layout that can include title slides, content slides, picture slides, chart slides, and various other types of slides to fit the specific needs of your presentation. Custom slide masters are beneficial for maintaining consistency and branding across all slides within a presentation.
PowerPoint lecture slides are designed to serve as a fundamental resource for instructors. These slides often include learning objectives, images, descriptions, and discussion questions. They are created to provide a structured starting point, which instructors can then personalize and expand upon to build comprehensive lectures that resonate with their teaching style and curriculum.