This preview is the first two days of lessons beginning 4.NBT.4. This includes the slideshow I use, which I have my students follow along, exactly. The first two days entail addition and subtraction without regrouping, but within 100,000's. My notes for the lessons are included for you, as well as three question exit tickets (and answers!).
We use the place value charts with discs and numbers (expanded form), as well as the number line. I have the students write to reflect about the strategies each day.
Works best in Google Slides (I always upload lessons afterwards, so kids can reference them later if they need a reminder!)