CCSS.Math.Content.3.MD.A.1. Solve word problems involving addition and subtraction of time intervals in minutes, e.g., by representing the problem on a number line diagram.
***I have it priced at $2.25 for the PowerPoint because I have attached the worksheet for assessing for free because I could not figure how to upload it as a part of this document. Thanks :)
I have created a PowerPoint that meets the above standard. I used this as a review in my class. It has 15 slides and I had students use laminated time number lines to solve. You could also have them use Judy clocks. I then had them use the review worksheet so I could assess their learning. (They were allowed to use the time number lines for this as well).